--- product_id: 685582422 title: "Ring Gen2 - Size Before You Buy, Smart Ring for Women(Size 8) | Sleep, Heart Rate & Cycle Monitoring, No Subscription, Women's Health & Fertility Tracker with BBT Technology" brand: "femometer" price: "€ 398.14" currency: EUR in_stock: true category: "Femometer" url: https://www.desertcart.hr/products/685582422-ring-gen2-size-before-you-buy-smart-ring-for-women store_origin: HR region: Croatia --- # Professional sleep stage & SpO2 insights 24/7 heart rate & HRV tracking 1,400+ nightly BBT measurements Ring Gen2 - Size Before You Buy, Smart Ring for Women(Size 8) | Sleep, Heart Rate & Cycle Monitoring, No Subscription, Women's Health & Fertility Tracker with BBT Technology **Brand:** femometer **Price:** € 398.14 **Availability:** ✅ In Stock ## Summary > 💍 Elevate your wellness game with the femometer Ring Gen2 — where style meets science. ## Quick Answers - **What is this?** Ring Gen2 - Size Before You Buy, Smart Ring for Women(Size 8) | Sleep, Heart Rate & Cycle Monitoring, No Subscription, Women's Health & Fertility Tracker with BBT Technology by femometer - **How much does it cost?** € 398.14 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/685582422-ring-gen2-size-before-you-buy-smart-ring-for-women) ## Best For - femometer enthusiasts ## Why This Product - Trusted femometer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power That Lasts:** Up to 35 days battery life with quick-charge case and lifetime free app subscription—smart health, zero hassle. - • **Sleep Like a Pro:** Unlock deep, light, and REM sleep analytics plus blood oxygen monitoring for personalized nightly recovery insights. - • **Sleek Meets Sturdy:** Ultra-light 3.3g ceramic ring with aluminum core, water-resistant to 100m, designed for 24/7 wear without compromise. - • **All-Day Health Vigilance:** Continuous heart rate, HRV, and activity tracking keep you effortlessly in tune with your body’s rhythms. - • **Cycle Tracking Revolution:** Leverage advanced basal body temperature tech with 1,400+ data points nightly for pinpoint ovulation and cycle predictions. ## Overview The femometer Ring Gen2 is a premium smart ring designed for women, offering continuous heart rate and HRV monitoring, professional sleep stage and blood oxygen tracking, and revolutionary basal body temperature-based cycle and ovulation predictions. Crafted from durable ceramic and aluminum, it’s ultra-lightweight and water-resistant, supporting seamless 24/7 wear. With up to 35 days of battery life, wireless charging, and a lifetime free app subscription, it integrates effortlessly with iOS and Android devices to empower women’s health with precise, data-driven insights. ## Description desertcart.com: femometer Ring Gen2 - Size Before You Buy, Smart Ring for Women(Size 8) | Sleep, Heart Rate & Cycle Monitoring, No Subscription, Women's Health & Fertility Tracker with BBT Technology : Electronics ## Features - 24/7 HEALTH COMPANION: Continuous heart rate monitoring and HRV tracking provide stress insights and health trends. Track daily activity, steps, and calorie burn. All health data syncs seamlessly with the lifetime free femometer app. - PROFESSIONAL SLEEP INSIGHTS: Track sleep stages (Deep, Light, REM), blood oxygen levels while you rest. Get detailed sleep scores and personalized recommendations. - ADVANCED CYCLE TRACKING: Revolutionary BBT technology with 1,400+ nightly temperature measurements provides accurate cycle predictions and ovulation detection. Part of trusted femometer ecosystem with 15M+ women worldwide. - COMFORT MEETS ELEGANCE: Just 2.7mm. Premium ceramic exterior with aluminum core ensures durability while weighing only 3.3g. Scratch-resistant, water-resistant to 100m, and designed for 24/7 wear. Size First with femometer Sizing Kit. - SIMPLE & RELIABLE: Up to 35-day battery life with quick charging case (stores 5 full charges). Pair with femometer app to get lifetime subscription. Compatible with iOS and Android. Includes 1-year warranty and dedicated customer support. Regular firmware updates ensure continuous improvement. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DJ31JPRB | | Additional Features | Activity Tracker, Cycle Tracking, Lightweight, Wireless Charging | | Age Range Description | Adult | | Band Material Type | Ceramic, Aluminum | | Battery Average Life | 7 days | | Battery Capacity | 21 milliamp_hours | | Battery Cell Type | Lithium Ion | | Best Sellers Rank | #8,221 in Electronics ( See Top 100 in Electronics ) #30 in Smart Rings | | Brand | femometer | | Built-In Media | User Manual | | Color | Gold | | Communication Feature | Bluetooth | | Compatible Devices | Smartphone | | Compatible Phone Models | All current iPhone models, all current Android models | | Connectivity Technology | Bluetooth | | Customer Reviews | 3.9 3.9 out of 5 stars (279) | | Display Type | No Display | | GPS Geotagging Functionality | No GPS | | Human Interface Input | Buttons | | Item Dimensions D x W x H | 0.11"D x 0.11"W x 0.11"H | | Item Weight | 3.7 g | | Manufacturer | LOLLIPOP TECHNOLOGY (HANGZHOU) CO., LTD | | Metrics Measured | Heart Rate Monitor, Sleep Duration, Body Temperature, Activity Tracker | | Model Number | 42616f15-b2f2-4c4a-9129-287f3771f45c | | Operating System | Wear OS 3.0 | | Screen Size | 1 inches | | Shape | Round | | Style Name | Ring Only | | Supported Application | Alarm, Fitness Tracker, Heart Rate Monitor, Sleep Monitor, Time Display | | Target Audience | Girls, Women | | UPC | 810115236429 | | Unit Count | 1 Count | | Warranty Description | 1 Year Manufacturer | | Warranty Type | Standard | | Water Resistance Depth | 1.5 meters | | Water Resistance Level | Water Resistant | | Wearable Computer Type | Smart Ring | | Wireless Compability | Bluetooth | ## Product Details - **Battery Capacity:** 21 milliamp_hours - **Battery Cell Composition:** Lithium Ion - **Brand:** femometer - **Connectivity Technology:** Bluetooth - **GPS:** No GPS - **Operating System:** Wear OS 3.0 - **Screen Size:** 1 inches - **Shape:** Round - **Special Feature:** Activity Tracker, Cycle Tracking, Lightweight, Wireless Charging - **Wireless Communication Standard:** Bluetooth ## Images ![Ring Gen2 - Size Before You Buy, Smart Ring for Women(Size 8) | Sleep, Heart Rate & Cycle Monitoring, No Subscription, Women's Health & Fertility Tracker with BBT Technology - Image 1](https://m.media-amazon.com/images/I/51BYpkcMRZL.jpg) ## Available Options This product comes in different **Color, Size** options. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/685582422-ring-gen2-size-before-you-buy-smart-ring-for-women](https://www.desertcart.hr/products/685582422-ring-gen2-size-before-you-buy-smart-ring-for-women) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-30*