Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
RENPHO R-MZW01 Silver Size 9 Lynx Smart Ring
Available offers (5)
Current
Silver Size 9
Retailer
€177.09
Available to order
Features
- All-day sleep and activity tracking
- 7-12 day battery life
- Includes charging case
- No subscription fees
- 5ATM waterproof
- Titanium alloy construction
- Compatible with iOS and Android
- FSA/HSA eligible
General specs
- Brand: RENPHO
- Model: R-MZW01
- Seller: Retailer
- ID: B0DKXD134W
- Size: 9
- Brand: RENPHO
- Width: 0.75 inches
- Gender: Men
- Height: 0.12 inches
- Length: 0.75 inches
- Weight: 0.0881849048 Pounds
- Sensor Type: Chip and sensor
- Battery Life: 7 days
- Connectivity: Apple Health, Google Health Connect
- Product Type: Smart Ring
- HSA/FSA Eligible: Yes
- Exterior Material: Titanium
- Tracking Features: Sleep, Blood oxygen levels, Stress, Heart rate, Steps, Distance, Calories burned, Walking, Running
- Sizing Kit Required: Yes
- Subscription Required: No
- Charging Case Included: Yes
- Water Resistance Rating: 5ATM
- Compatible Operating Systems: iOS, Android
- First listed by seller: July 17, 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
Track your health data all day and night with the RENPHO Lynx Smart Ring. Designed for fitness-conscious individuals who want detailed sleep and activity insights without a subscription, this ring is perfect for monitoring your recovery and daily activity. Whether you are training for a marathon or just trying to improve your sleep quality, the Lynx ring delivers accurate data from your fingertip.
Unlike other smart rings that require monthly fees, the RENPHO Lynx gives you comprehensive tracking without any subscription. The Renpho Health App syncs with Apple Health and Google Health Connect. You can check your sleep stages, heart rate, and stress levels right on your phone. The ring's green light sensor records your heart rate even when you are moving.
The ring has a 7-day battery life, and the included charging case gives you another full charge on the go. This means you can travel for up to two weeks without worrying about power. The titanium alloy exterior is 5ATM waterproof, so it survives swimming and hand washing. Wear it 24/7 without removing it. Just use the official sizing kit for the perfect fit. The ring also tracks women's health and is HSA/FSA eligible.
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| Brand | RENPHO | KppeX | POBOVi | REWSX | DSHKISK | Tiantianka |
| Model | R-MZW01 | X1-11# | Gen 1 | 735167267934 | B0G2CZ7KZV | |
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| Price | €177.09 | €124.58 | €79.20 | €50.71 | €29.54 | €30.94 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | May 29, 2026 | Mar 21, 2026 | Mar 21, 2026 | Mar 30, 2026 | Jun 19, 2026 | Mar 21, 2026 |
| Size | 9 | 11 | 10 | 14 | 8 | 7 |
| Battery Life | 7 days | 3–5 d | 7 d | 3–5 d | 7–10 d | 7–10 d |
| Connectivity | Apple Health, Google Health Connect | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth |
| Material | Stainless Steel | Titanium | Titanium Alloy | Metal | Titanium Alloy | |
| Charging Method | Magnetic | Wireless | Magnetic | Magnetic | Magnetic | |
| OS Compatibility | Android 4.4+, iOS 8.4+ | iOS, Android | Android 4.4+, iOS 8.4+ | iOS, Android | Android, iOS | |
| Water Resistance | IP68 | IP68 | IP68 | IP68 | IP68 | |
RENPHO R-MZW01 Silver All-day sleep and activity tracking
€177.09
When this device makes sense
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