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 8 Lynx Smart Ring
Available offers (5)
Current
Silver Size 8
Retailer
€177.47
Available to order
Features
- 7-day battery life
- No subscription fees
- 5ATM waterproof
- Titanium exterior
- Charging case included
- Sleep tracking
- Blood oxygen monitoring
- Stress tracking
- Heart rate monitoring
- Step and distance tracking
- Calorie tracking
- HSA/FSA eligible
General specs
- Brand: RENPHO
- Model: R-MZW01
- Seller: Retailer
- ID: B0DKXC91NX
- Size: 8
- Width: 0.71 inches
- Height: 0.12 inches
- Length: 0.71 inches
- Weight: 0.0882 pounds
- Sensors: Heart rate, Blood oxygen, Stress, Sleep, Step, Distance, Calorie
- Material: Titanium
- Sizing Kit: Required
- Battery Life: 7 days
- Subscription: None
- Charging Case: Included
- Compatible OS: iOS, Android
- FSA/HSA Eligible: Yes
- Water Resistance: 5ATM
- First listed by seller: April 16, 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
The RENPHO Lynx Smart Ring is for the data-driven person who wants to understand their body without wearing a bulky watch. It's perfect for tracking sleep patterns and all-day activity, giving you clear insights into your health.
Unlike standard fitness trackers, this ring focuses on precision and comfort. The titanium exterior is durable enough for swimming and hiking, yet lightweight for 24/7 wear. A sophisticated chip ensures accurate heart rate, blood oxygen, and stress monitoring. You get detailed sleep analysis without a subscription, syncing seamlessly with Apple Health and Google Health Connect.
The 7-day battery life and included charging case mean you never worry about power. Simply recharge the case, and your ring is always ready for travel or daily use. Before buying, use the official sizing kit for a perfect fit. This is a practical tool for anyone serious about their health data.
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| Brand | RENPHO | POBOVi | Victormont | Oura | Oura | TIAZUUX |
| Model | R-MZW01 | POBOVi_SR1 | Gen-11 | JZ90-54217-10 | JZ90-54144-11 | Smart Ring |
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| Price | €177.47 | €1.16 | €89.17 | €311.24 | €311.24 | €53.50 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Jun 19, 2026 | May 27, 2026 | Mar 21, 2026 | Jun 24, 2026 | Mar 21, 2026 | May 3, 2026 |
| Size | 8 | 10 | 11 | |||
| Width | 0.71 inches | 1.0629921249 inches | 1.1023622036 inches | |||
| Height | 0.12 inches | 0.2755905509 inches | 0.2755905509 inches | |||
| Length | 0.71 inches | 1.0629921249 inches | 1.1023622036 inches | |||
| Battery Life | 7 days | 20 days with wireless charging case | Up to 8 days | 5 to 8 days | ||
| Item Weight | 2.89 ounces | 5.3 ounces | 2.9 Grams | |||
| Compatibility | iOS, Android | Android, iOS | iPhone, Android | |||
RENPHO R-MZW01 Silver 7-day battery life
€177.47
When this device makes sense
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