Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
UniJethro SR11M Size 8#, Black Smart Ring Health Fitness Tracker
Available offers (8)
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Current
Size 8#, Black
Retailer
€32.03
Available to order
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Price history by offer
Volatility: HighFeatures
- 24-hour continuous health monitoring
- Heart rate monitoring
- Blood oxygen saturation monitoring
- Blood pressure monitoring
- Sleep tracking and analysis
- Daily activity tracking
- Remote photography
- Family health data sharing
- IP68 waterproof rating
- Long battery life with charging case
- No subscription fees required
- Compatible with Android and iOS
General specs
- Brand: UniJethro
- Model: SR11M
- Seller: Retailer
- ID: B0DL2V1FB5
- Size: 8#
- Brand: UniJethro
- Width: 0.31 inches
- Height: 2 inches
- Length: 2 inches
- App Fees: No
- Accessories: 1 smart ring, 1 portable ring charging case, 3 ring protectors, 1 charging cable, 1 instruction manual, 1 charging case cable
- Family Care: Yes
- Battery Life: 5-7 days
- Connectivity: Bluetooth
- Step Tracking: Yes
- Number of Items: 1
- Calorie Tracking: Yes
- Waterproof Depth: Yes
- Sleep Monitoring: Yes
- Distance Tracking: Yes
- Waterproof Rating: IP68
- Remote Photography: Yes
- Charging Case Cycles: 10-15
- Heart Rate Monitoring: Yes
- Charging Case Capacity: 300 mAh
- Blood Oxygen Saturation Monitoring: Yes
- First listed by seller: April 11, 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
UniJethro Smart Ring offers a discreet way to stay on top of your health and capture moments without pulling out your phone. Use it during your morning jog to track heart rate, steps, and calories—no chunky wristband needed. The ring is ultra-light at 3.6 grams and IP68 waterproof, so you can wear it swimming or in the shower.
The remote photography feature is perfect for group shots or selfies: just shake your finger twice to snap. Family care lets you add loved ones in the app to check their step counts, sleep, and blood oxygen—ideal for monitoring elderly parents from afar.
Battery lasts 5–7 days, and the charging case provides 10–15 full charges. No subscription fees, no fuss. Includes three ring protectors to guard against scratches during workouts.
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| Brand | UniJethro | Uni-Green | Freeze2Trim | Rugsoul | Oulencu | Oura |
| Model | SR11M | ours ring sizing kit | 24OL-NVSR | JZ90-54217-10 | ||
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| Price | €32.03 | €25.34 | €38.26 | €61.40 | €88.98 | €310.58 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Apr 7, 2026 | May 18, 2026 | May 8, 2026 | Mar 21, 2026 | May 9, 2026 | Jun 24, 2026 |
| Size | 8# | 8 | 13 | 10 | ||
| Battery Life | 5-7 days | 6, 7 | Up to 8 days | |||
| Weight | 5.39 | 2.83 | 0.3968320716 pounds | |||
UniJethro SR11M Black 24-hour continuous health monitoring
€32.03
When this device makes sense
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