---
product_id: 735415887
title: "Seiko Men's SPB121 Prospex Brown 39.5mm Stainless Steel, Modern Watch, Modern"
brand: "seiko"
price: "€ 1519.86"
currency: EUR
in_stock: false
reviews_count: 5
category: "Seiko"
url: https://www.desertcart.hr/products/735415887-seiko-mens-spb121-prospex-brown-39-5mm-stainless-steel-modern
store_origin: HR
region: Croatia
---

# 70-hour power reserve Magnified date window Screw down crown for water resistance Seiko Men's SPB121 Prospex Brown 39.5mm Stainless Steel, Modern Watch, Modern

**Brand:** seiko
**Price:** € 1519.86
**Availability:** ❌ Out of Stock

## Summary

> ⌚ Elevate your wrist game with Seiko’s modern classic.

## Quick Answers

- **What is this?** Seiko Men's SPB121 Prospex Brown 39.5mm Stainless Steel, Modern Watch, Modern by seiko
- **How much does it cost?** € 1519.86 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/735415887-seiko-mens-spb121-prospex-brown-39-5mm-stainless-steel-modern)

## Best For

- seiko enthusiasts

## Why This Product

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

## Key Features

- • **Secure & Sleek:** Screw down crown ensures water resistance and durability without sacrificing style.
- • **Luminous Leadership:** LumiBrite hands and markers glow bright, making every second count day or night.
- • **Precision at a Glance:** Magnified date window offers effortless readability for your busy schedule.
- • **Enduring Power, All Weekend Long:** 70-hour power reserve keeps you on time through every meeting and adventure.
- • **Timeless Elegance with a Modern Edge:** Green sunray dial with gold accents and sapphire crystal bezel for standout sophistication.

## Overview

The Seiko Men's SPB121 Prospex is a 39.5mm stainless steel automatic watch featuring a 70-hour power reserve, screw down crown for enhanced water resistance, and a magnified date window. Its green sunray dial with gold accents, LumiBrite hands, and sapphire crystal bezel combine durability with refined style, perfect for professionals who demand both function and flair.

## Description

- Automatic movement - Magnified date window - LumiBrite hands and markers - Green dial with sunray finish and gold accents - Rotating bezel - Tri-Fold clasp with push button release

Review: El reloj es impresionante y más aún al precio al que estaba, no podía dejar pasar la oportunidad. Creo es la segunda compra con este vendedor y la verdad, todo de maravilla.
Review: Love love love this watch! It is gorgeous. The sapphire crystal, the cathedral hands, the cyclops calendar, the green dial, the gold numerals, the super shiny bezel and lugs are all outstanding. The brown leather watch band is very secure with a locking closure and two tips at the front and the back of the bracelet for extra security. I have a very small wrist and this fit very well. This watch is only 1.5 mm larger than my Bulova field watch but does not look bigger. It, however, is more prominent on my wrist because of its height. The band fits much better than any other watch manufacture band. I read complaints about the band but with exception of the color, I don't wear much brown, I love it. The shipping was fast. I received it a day early. It was a great price for a great watch. Thank you Wristoutlet.

## Features

- Screw down crown, screw, see-through caseback, 70-hour power reserve, magnified date window, LumiBrite hands and markers

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0B33H4V74 |
| Customer Reviews | 4.6 4.6 out of 5 stars (96) |
| Date First Available  | June 24, 2022 |
| Department  | Men |
| Item model number  | SPB121 |
| Manufacturer  | Seiko |
| Product Dimensions  | 12.7 x 12.7 x 10.16 cm; 471.74 g |

## Images

![Seiko Men's SPB121 Prospex Brown 39.5mm Stainless Steel, Modern Watch, Modern - Image 1](https://m.media-amazon.com/images/I/41Q-qMVHxoL.jpg)
![Seiko Men's SPB121 Prospex Brown 39.5mm Stainless Steel, Modern Watch, Modern - Image 2](https://m.media-amazon.com/images/I/41fLBAYrAOL.jpg)
![Seiko Men's SPB121 Prospex Brown 39.5mm Stainless Steel, Modern Watch, Modern - Image 3](https://m.media-amazon.com/images/I/511Tf+w8h+L.jpg)
![Seiko Men's SPB121 Prospex Brown 39.5mm Stainless Steel, Modern Watch, Modern - Image 4](https://m.media-amazon.com/images/I/516+gulAmdL.jpg)
![Seiko Men's SPB121 Prospex Brown 39.5mm Stainless Steel, Modern Watch, Modern - Image 5](https://m.media-amazon.com/images/I/51zEOSjdhnL.jpg)

## Questions & Answers

**Q: How can I be sure of that is original watch?**
A: I don’t believe they are making knock offs of a watch under a 1000.00 dollars

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***O on January 21, 2026*

El reloj es impresionante y más aún al precio al que estaba, no podía dejar pasar la oportunidad. Creo es la segunda compra con este vendedor y la verdad, todo de maravilla.

### ⭐⭐⭐⭐⭐ Review
*by E***B on December 24, 2025*

Love love love this watch! It is gorgeous. The sapphire crystal, the cathedral hands, the cyclops calendar, the green dial, the gold numerals, the super shiny bezel and lugs are all outstanding. The brown leather watch band is very secure with a locking closure and two tips at the front and the back of the bracelet for extra security. I have a very small wrist and this fit very well. This watch is only 1.5 mm larger than my Bulova field watch but does not look bigger. It, however, is more prominent on my wrist because of its height. The band fits much better than any other watch manufacture band. I read complaints about the band but with exception of the color, I don't wear much brown, I love it. The shipping was fast. I received it a day early. It was a great price for a great watch. Thank you Wristoutlet.

### ⭐⭐⭐⭐⭐ Review
*by W***N on May 24, 2025*

Excelente produto e vendedor!! Fiquei surpreso com a beleza do relógio e a excelente logística da Amazon. O produto chegou muito mais rápido que o esperado!

## Frequently Bought Together

- Seiko SPB121 Prospex Men's Watch Brown 39.5mm Stainless Steel
- Bergeon 4040 Extensible and reversible movement holder Watchmaker Tools
- BERGEON 8008 Rubber Ball to Open and Close case Backs Ø65 mm, black,white, Open

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**Shop now:** [https://www.desertcart.hr/products/735415887-seiko-mens-spb121-prospex-brown-39-5mm-stainless-steel-modern](https://www.desertcart.hr/products/735415887-seiko-mens-spb121-prospex-brown-39-5mm-stainless-steel-modern)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-08*