---
product_id: 1474383
title: "Fisher Space Pen Military Cap-O-Matic Pen, Black Ink | Pressurized Ballpoint Pen, Writes Upside Down and in Extreme Temperatures, Medium Point, Pocket Clip, Made in the USA"
brand: "fisher"
price: "€ 42.25"
currency: EUR
in_stock: true
reviews_count: 13
category: "Fisher"
url: https://www.desertcart.hr/products/1474383-fisher-space-pen-military-cap-o-matic-pen-black-ink
store_origin: HR
region: Croatia
---

# Waterproof & grease-proof Writes upside down & any angle Operates -30°F to 250°F Fisher Space Pen Military Cap-O-Matic Pen, Black Ink | Pressurized Ballpoint Pen, Writes Upside Down and in Extreme Temperatures, Medium Point, Pocket Clip, Made in the USA

**Brand:** fisher
**Price:** € 42.25
**Availability:** ✅ In Stock

## Summary

> 🚀 Write like a space explorer, anywhere on Earth (or beyond)!

## Quick Answers

- **What is this?** Fisher Space Pen Military Cap-O-Matic Pen, Black Ink | Pressurized Ballpoint Pen, Writes Upside Down and in Extreme Temperatures, Medium Point, Pocket Clip, Made in the USA by fisher
- **How much does it cost?** € 42.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/1474383-fisher-space-pen-military-cap-o-matic-pen-black-ink)

## Best For

- fisher enthusiasts

## Why This Product

- Trusted fisher brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built for Extremes:** Reliable performance from freezing cold to scorching heat (-30°F to 250°F) keeps you prepared for any environment.
- • **Lifetime Reliability:** Trusted by astronauts and military pros alike, backed by a lifetime warranty—your forever pen.
- • **Single-Hand Activation:** Quick, smooth click mechanism designed for professionals on the move—no fumbling, just flow.
- • **Writes Anywhere, Anytime:** Effortlessly jot notes upside down, underwater, or on greasy surfaces—no limits to your creativity.
- • **Durable Matte Black Finish:** Tactical, scratch-resistant coating that blends style with rugged reliability for everyday carry.

## Overview

The Fisher Space Pen Military Cap-O-Matic is a pressurized ballpoint pen engineered to write flawlessly in zero gravity, extreme temperatures (-30°F to 250°F), underwater, and at any angle—even upside down. Featuring a durable matte black finish, single-hand activation, and a lifetime warranty, this pen is a trusted tool for astronauts, military personnel, and professionals who demand unmatched reliability and versatility in their everyday writing instrument.

## Description

Product description The Cap-o-Matic Pen This single-hand activation pen offers the same technology used by astronauts at an affordable price, making it suitable for various professionals and everyday use. Fisher Space Pens Since 1967 Explore More Fisher Space Pens Bullet Pens Cap-o-Matic Pens Astronaut Pens Clutch Pens Trekker Pens Refills

Review: High quality low cost makes this pen a WIN! - I have been using these pens for over 20+ years now. I have constantly and consistently relied upon these pens, and they have not failed me yet. I highly recommend these pens and here is why: Short Review: High quality, low cost makes these pens: worthy! I have brought these pens along with me through battlefield conditions. Rain, sleet, snow, mud... (These pens were designed for the rigours of space - so they scoff at Earth conditions). I have been able to write with them throughout my service and after. They are reliable pens. I buy these pens without hesitation when prices drop below $10 bucks (you should too). They pretty much keep forever, and are awesome gifts. They are brass metal underneath with a thick paint coat over it. The most I've had to do (and I don't abuse my things on purpose) is touch up the tip where the pen comes out. I've dropped it, stepped on it, left if lying around in harsh weather, boxed it up for years and forgotten about it, bought more of these exact same pens, lost them, found them... You name it. Each time, these pens have come out WRITING. They are so reliable, that I would actually be SURPRISED if they did not work due to anything OTHER than running out of ink. I wanted a pen without a detachable cap (just seemed like another thing to lose), and this model fits the bill perfectly. So, if you want a good reliable pen that won't break the bank or your heart if you ever were to lose it, get this one. Long Review: The first time I ever actively handled these pens was during basic training for the military. I knew of them before that. Just never felt that I needed anything more than a .10 cent Bic or Papermate pen, and I bought those in boxfuls. At the time, I did not have time to worry about "quality" or "consistency" - they had a lot of print on their packaging saying how they were "space pens," "high quality." All that jazz. The only thing that mattered was whether or not it would work in the field. Internet was not readily available to share information or do research (yeah, I'm old). During those days, people just had to trust what was written on the packaging 99% of the time and if it didn't work... too bad, so sad. You just avoid that brand in the future while telling all your buddies to avoid it too. Sure, it lent to having something to talk about with your friends during down time, but there were many lost pennies, and inefficient purchasing habits too. So, for anyone who was in the military (and I'm not sure if they changed these rules or not) we were not allowed to have the average Bic pens because they had these white plastic pen tubes at the time (Papermate pens were blue - also a no-no). Almost all items going into the field could not be reflective or shiny, and certainly not rainbow colored. There were certain exceptions (no idea why I was allowed to carry these) and they were: the Leatherman multitool (Tim Leatherman had just released his original tool without the locking blades, and it was still shiny stainless steel - nothing was tactically painted or blacked out), and the bright red swiss army knives (there were not many color variations in the swiss army knife scales back then either). I only know because I brought both into the field - go figure. Its the military. What can I say? Anyway, to be certain that your other items met field-worthiness, their colors had to be muffled. We had a couple of soldiers just wrap a piece of "100 mph" field tape around a bic. For some reason, I didn't - though I'm kind of glad today that I didn't. Countless soldiers have lost their gear crawling around in the field - especially pens and whatnot... So... of course, I bought this pen in black. It was like a $5 dollar pen back then (expensive by those standards) and I didn't want to lose it. Whenever the pen got scuffed up to the brass, we had to get a black sharpie marker and just "paint" over it again. Miraculously, this pen never got lost and stayed with me (through basic training and everything!). I still have it to this day - and it continues to write flawlessly. Strangely, I have never changed out its original ink fill. I credit that to not writing exclusively with this pen, but still... after 20+ years... it still writes! I discovered a couple of things because of this. This ink... it doesn't dry up like other "normal" inks. It just keeps on lasting. I have found new boxes of Bic pens with less time in the stockrooms which no longer wrote ("guaranteed to write every time!" - nope.). Those pitiful dried up husks of former greatness... money in the garbage. That meaningless scribble printed on their boxes... It would cost you more money to get them to execute on their guarantees and warranties than to just buy another box. I've had pens from China that dry up in less time and even fade after they touch paper for a year. Not this ink. I've only had ONE other brand of pen that still wrote after 15+ years of being forgotten somewhere in a bag and that pen cost around $250! But that pen cannot write underwater, upside down... etc. etc. etc. This pen is a beast. It still functions. It writes in water, upside down and in a huge range of temperatures. For the adventurers out there (jumping out of airplanes every moment you get, or climbing mountains all the time... you know who you are), you don't have to worry about it popping under different air pressures or temperatures. You don't have to worry about landing in a pond or a lake. Go ahead and place your notepad on the wall to write if no tables are nearby. This pen will function. Want to give your phone number to that girl you met at that greasy chinese take-out place, and all you had in your pocket was this pen (yeah, no phone... but you're giving her your phone number... and... it's MY review! Go write your own review!) and that greasy napkin you just used to wipe your mouth with? No problem! This pen writes on greasy napkins like a champ! As for my pen? Sure, the spring is a little dated. It is not as "clicky" as the first day. But it's also over 20 years old! Can't question that kind of quality. If pens are disposable for you, keep buying those Bics and Papermates. Those are great pens! If you tend to regularly use one pen, or need a pen to handle certain conditions without fail because you're always on the go, get this one! I've unintentionally tested one, and it PASSED! Remember to get the fisher space pen refills, because that is what really gives these pens "super powers." Also, if you are going to operate in adverse weather conditions, you'll want one of those weather resistant notebooks to match. I buy these items with my own pennies. If my review helped you at all, or you just got a tiny chuckle, share the love! Click on that thumbs up icon! Thanks for reading!
Review: Good Pen - Very good. I am constantly having issues of pen and paper quality or debris getting in the way of writing. This pen pushes through to let me continue writing.

## Features

- A Pen Designed to Last: The Military Cap-O-Matic Space Pen features a single-hand activation, a durable matte black finish, ideal for professionals who need a reliable, affordable pen
- Write at any Angle: Fisher Space Pens are versatile and practical ballpoint pens that can smoothly write at any angle, even upside down with reliable performance on almost any surface
- Write in Extreme Temperatures: All Fisher Space Pens write in extreme temperatures ranging from -30°F to 250°F (-34° to +121°C), underwater, in space or any other harsh environment
- Quality and Reliability: Trusted by Astronauts, Explorers, and Professionals, Fisher Space Pens are often used in industries including Engineering, Aviation, Science, and Outdoor Adventures
- Explore The Fisher Space Pen Collection: Try our full collection of versatile and functional pens designed to write in Zero Gravity, Underwater, Through Oil and Grease and in Extreme Temperatures.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001NXDFC8 |
| Additional Features | Waterproof |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #6,178 in Office Products ( See Top 100 in Office Products ) #166 in Ballpoint Pens |
| Body Shape | Round |
| Brand | Fisher |
| Brand Name | Fisher |
| Closure Type | Snap |
| Color | Matte Black |
| Customer Reviews | 4.6 out of 5 stars 7,708 Reviews |
| Drill Point | Medium |
| Global Trade Identification Number | 00747609542417 |
| Grip Type | plastic plain grip |
| Hand Orientation | Ambidextrous |
| Hardness | B |
| Ink Base | Water |
| Ink Color | Black |
| Item Diameter | 0.38 Inches |
| Item Dimensions | 5.25 x 0.5 x 0.5 inches |
| Item Weight | 0.01 Ounces |
| Line Size | 1.1 Millimeters |
| Manufacturer | Fisher Space Pen |
| Material | Multi |
| Material Type | Multi |
| Model Number | SM4B |
| Style | Original Packaging |
| UPC | 747609542417 |
| Unit Count | 1 Count |
| Warranty Description | Lifetime parts and labor. |
| Water Resistance Level | Water Resistant |
| Writing Instrument Form | Ballpoint Pen |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** Fisher
- **Color:** Matte Black
- **Ink Color:** Black
- **Writing Instrument Form:** Ballpoint Pen

## Images

![Fisher Space Pen Military Cap-O-Matic Pen, Black Ink | Pressurized Ballpoint Pen, Writes Upside Down and in Extreme Temperatures, Medium Point, Pocket Clip, Made in the USA - Image 1](https://m.media-amazon.com/images/I/61V8MZvqbKL.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Questions & Answers

**Q: Does anyone know the difference between the SM4B and M4B**
A: I ordered both and the only difference I have found is the SM4B has cheaper packaging. The SM4B comes with a simple cardboard backed print package, covered in a stiff plastic, glued to the cardboard. The M4B comes with a nicer black cardboard box. The Pens themselves are identical as far as I can tell. Both are metal construction with nice clips in matte black.

**Q: Does it write in the rain?**
A: According to Fisher Space Pen, their Sealed Pressurized Ink Cartridge "Writes under water", Performs in temperatures from -30ºF to +250ºF, in zero gravity, at any angle–even upside down!

**Q: refills**
A: http://www.amazon.com/Refills-Bullet-Fisher-Space-SPR4/dp/B004HGDQQS/ref=sr_1_2?s=office-products&ie=UTF8&qid=1393804261&sr=1-2&keywords=space+pen+refill

**Q: Would two of these easily fit into the pen slot on a police uniform left breast pocket? What about a snugger 5.11 Class B breast pocket?**
A: Might be a smidge tight, but two will fit in my uniform pocket. I carry one of these in my shirt and a Fisher X-Mark in my pants pocket as a spare. A bullet pen would work in the pocket, too, but get a clip for it. Otherwise, it will roll off the hood of the squad and your partner will step on it. They're practically indestructible, but the pavement scars them and they look like hell after that. Be careful out there.

## Customer Reviews

### ⭐⭐⭐⭐⭐ High quality low cost makes this pen a WIN!
*by R***P on August 19, 2018*

I have been using these pens for over 20+ years now. I have constantly and consistently relied upon these pens, and they have not failed me yet. I highly recommend these pens and here is why: Short Review: High quality, low cost makes these pens: worthy! I have brought these pens along with me through battlefield conditions. Rain, sleet, snow, mud... (These pens were designed for the rigours of space - so they scoff at Earth conditions). I have been able to write with them throughout my service and after. They are reliable pens. I buy these pens without hesitation when prices drop below $10 bucks (you should too). They pretty much keep forever, and are awesome gifts. They are brass metal underneath with a thick paint coat over it. The most I've had to do (and I don't abuse my things on purpose) is touch up the tip where the pen comes out. I've dropped it, stepped on it, left if lying around in harsh weather, boxed it up for years and forgotten about it, bought more of these exact same pens, lost them, found them... You name it. Each time, these pens have come out WRITING. They are so reliable, that I would actually be SURPRISED if they did not work due to anything OTHER than running out of ink. I wanted a pen without a detachable cap (just seemed like another thing to lose), and this model fits the bill perfectly. So, if you want a good reliable pen that won't break the bank or your heart if you ever were to lose it, get this one. Long Review: The first time I ever actively handled these pens was during basic training for the military. I knew of them before that. Just never felt that I needed anything more than a .10 cent Bic or Papermate pen, and I bought those in boxfuls. At the time, I did not have time to worry about "quality" or "consistency" - they had a lot of print on their packaging saying how they were "space pens," "high quality." All that jazz. The only thing that mattered was whether or not it would work in the field. Internet was not readily available to share information or do research (yeah, I'm old). During those days, people just had to trust what was written on the packaging 99% of the time and if it didn't work... too bad, so sad. You just avoid that brand in the future while telling all your buddies to avoid it too. Sure, it lent to having something to talk about with your friends during down time, but there were many lost pennies, and inefficient purchasing habits too. So, for anyone who was in the military (and I'm not sure if they changed these rules or not) we were not allowed to have the average Bic pens because they had these white plastic pen tubes at the time (Papermate pens were blue - also a no-no). Almost all items going into the field could not be reflective or shiny, and certainly not rainbow colored. There were certain exceptions (no idea why I was allowed to carry these) and they were: the Leatherman multitool (Tim Leatherman had just released his original tool without the locking blades, and it was still shiny stainless steel - nothing was tactically painted or blacked out), and the bright red swiss army knives (there were not many color variations in the swiss army knife scales back then either). I only know because I brought both into the field - go figure. Its the military. What can I say? Anyway, to be certain that your other items met field-worthiness, their colors had to be muffled. We had a couple of soldiers just wrap a piece of "100 mph" field tape around a bic. For some reason, I didn't - though I'm kind of glad today that I didn't. Countless soldiers have lost their gear crawling around in the field - especially pens and whatnot... So... of course, I bought this pen in black. It was like a $5 dollar pen back then (expensive by those standards) and I didn't want to lose it. Whenever the pen got scuffed up to the brass, we had to get a black sharpie marker and just "paint" over it again. Miraculously, this pen never got lost and stayed with me (through basic training and everything!). I still have it to this day - and it continues to write flawlessly. Strangely, I have never changed out its original ink fill. I credit that to not writing exclusively with this pen, but still... after 20+ years... it still writes! I discovered a couple of things because of this. This ink... it doesn't dry up like other "normal" inks. It just keeps on lasting. I have found new boxes of Bic pens with less time in the stockrooms which no longer wrote ("guaranteed to write every time!" - nope.). Those pitiful dried up husks of former greatness... money in the garbage. That meaningless scribble printed on their boxes... It would cost you more money to get them to execute on their guarantees and warranties than to just buy another box. I've had pens from China that dry up in less time and even fade after they touch paper for a year. Not this ink. I've only had ONE other brand of pen that still wrote after 15+ years of being forgotten somewhere in a bag and that pen cost around $250! But that pen cannot write underwater, upside down... etc. etc. etc. This pen is a beast. It still functions. It writes in water, upside down and in a huge range of temperatures. For the adventurers out there (jumping out of airplanes every moment you get, or climbing mountains all the time... you know who you are), you don't have to worry about it popping under different air pressures or temperatures. You don't have to worry about landing in a pond or a lake. Go ahead and place your notepad on the wall to write if no tables are nearby. This pen will function. Want to give your phone number to that girl you met at that greasy chinese take-out place, and all you had in your pocket was this pen (yeah, no phone... but you're giving her your phone number... and... it's MY review! Go write your own review!) and that greasy napkin you just used to wipe your mouth with? No problem! This pen writes on greasy napkins like a champ! As for my pen? Sure, the spring is a little dated. It is not as "clicky" as the first day. But it's also over 20 years old! Can't question that kind of quality. If pens are disposable for you, keep buying those Bics and Papermates. Those are great pens! If you tend to regularly use one pen, or need a pen to handle certain conditions without fail because you're always on the go, get this one! I've unintentionally tested one, and it PASSED! Remember to get the fisher space pen refills, because that is what really gives these pens "super powers." Also, if you are going to operate in adverse weather conditions, you'll want one of those weather resistant notebooks to match. I buy these items with my own pennies. If my review helped you at all, or you just got a tiny chuckle, share the love! Click on that thumbs up icon! Thanks for reading!

### ⭐⭐⭐⭐⭐ Good Pen
*by J***H on May 8, 2026*

Very good. I am constantly having issues of pen and paper quality or debris getting in the way of writing. This pen pushes through to let me continue writing.

### ⭐⭐⭐⭐⭐ Nice quality
*by A***W on February 8, 2026*

Its a nice pen, the click action is super smooth and feels nice, its comfortable and very durable. The cerakote finish is impeccable, extremely scratch resistant and if your hands are going to get oily, wet, or slippery the cerakote helps retain grip which is very helpful. If youre new to Fisher and are unsure how they write, its honestly phenomenal, incredibly smooth, no hickups ever even when you get it in oil. They are my favorite writing pens I own. The blacl cherry color seems more purple in person than in the pictures, its more of a midnight purple than a dark cherry. Since it groups all the variations of this pen that you buy, I also own the Fisher brass finish (non lacquered). It is also another good choice, but the brass ages very very fast, only get that one if you specifically want a weathered looking brass pen after a week of use. Still the weathered and worn look does add character to the pen, I am glad to see Fisher released a lacquered brass version just recently though.

## Frequently Bought Together

- Fisher Space Pen Military Cap-O-Matic Space Pen, Ballpoint, Black Ink, Non-Reflective, Brass, Matte Black
- Fisher Space Pen Bold Point Pressurized Cartridge Refill, Black Ink, 1 Pack
- Fisher Space Pen Bullet Pen, Ballpoint, Brass, Matte Black, Black Ink, Pocket Clip

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-26*