Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
femometer Gen2 Up to 7 days battery life Smart Ring - Sleep, Heart Rate & Cycle Monitoring
Available offers (3)
Current
Up to 7 days battery life
Retailer
€142.64
Available to order
Features
- Continuous heart rate monitoring
- Professional sleep insights
- Advanced cycle tracking
- Stress monitoring
- Step and calorie monitoring
- Up to 7 days battery life
General specs
- Brand: femometer
- Model: Gen2
- Seller: Retailer
- ID: B0DJ32QGBJ
- Weight: 3.3g
- Material: Premium ceramic exterior with aluminum core
- Battery Life: Up to 7 days
- Compatibility: iOS, Android
- Water Resistance: 100m
- First listed by seller: June 6, 2025
If you are interested in more details, you can find full information on the seller's page.
Price History for seller Retailer
Shipping options
Delivery to 
United States
United States
Available
Meet the femometer Smart Ring Gen2—your new health sidekick, tailor-made for women who want to keep tabs on their wellness without the hassle. It's not just a pretty piece of tech; it's got brains too. With continuous HRV tracking, it's like having a mini cardiologist on your finger, dishing out the lowdown on your heart rate, stress levels, and even those sneaky health trends you didn't notice.
And when it comes to sleep, this ring doesn't just count sheep. Thanks to professional sleep analysis, it breaks down your night into Deep, Light, and REM stages, then whispers (figuratively) tips to turn your sleep from meh to marvelous.
For the ladies tuning into their cycles, the ring's smart BBT technology is a game-changer. Imagine it taking over 1,400 temperature readings while you're off in dreamland—no thermometer under the tongue required. It's like having a fertility expert in your corner, minus the awkward conversations.
Designed for 24/7 wear, it's so light (just 3.3g!) and comfy, you'll forget it's there—until it's time to brag about your 100m water resistance, that is. Plus, with up to 7 days of battery life and a free app that plays nice, it's the low-maintenance buddy you've been waiting for. And because we're not about leaving you hanging, enjoy lifetime updates to keep your ring sharp as a tack.
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| Brand | femometer | LISASRING | POBOVi | JHYLJSH | Shenzhen Yawell Intelligent Technology Co.,Ltd | TIAZUUX |
| Model | Gen2 | R26 | Gen 1 | 2024 | R06 | Smart Ring |
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| Price | €142.64 | €80.23 | €79.35 | €24.06 | €35.65 | €53.49 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | May 12, 2026 | Mar 21, 2026 | Mar 21, 2026 | Dec 17, 2025 | Mar 21, 2026 | May 3, 2026 |
| Material | Premium ceramic exterior with aluminum core | Titanium Alloy | Titanium | |||
| Battery Life | Up to 7 days | 7 d | 5-7 days of use, 15 days of standby | |||
| Compatibility | iOS, Android | Android 5.1 or above, iOS 8.0 or above | iPhone, Android | |||
| Water Resistance | 100m | 5 ATM | IP68 | |||
| batteries | 1 AAA batteries required. (included) | 1 Lithium Polymer batteries required. (included) | 1 Nonstandard Battery batteries required. (included) | |||
| Item Weight | 2.39 ounces | 2.08 ounces | 2.9 Grams | |||
| Package Dimensions | 2.99 x 2.91 x 1.73 inches | 4.06 x 3.15 x 1.26 inches | 3.54 x 3.15 x 1.49 inches | |||
femometer Gen2 Continuous heart rate monitoring
€142.64
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