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 11 Lynx Smart Ring
Available offers (5)
Current
Silver Size 11
Retailer
€177.09
Available to order
Features
- Sleep and activity tracking
- 7-12 day battery life
- 5ATM waterproof rating
- Titanium alloy construction
- No subscription fees
- Bluetooth 5.0 connectivity
- Includes charging case
- Compatible with iOS and Android
General specs
- Brand: RENPHO
- Model: R-MZW01
- Seller: Retailer
- ID: B0DKXBCC56
- APP: Renpho Health App
- Size: 11
- Width: 0.81 inches
- Height: 0.12 inches
- Length: 0.81 inches
- Weight: 0.0881849048 pounds
- Sizing Kit: recommended
- Battery Life: 7 days
- Subscription: free
- Charging Case: included
- Compatibility: iOS, Android
- Health Tracking: sleep, blood oxygen levels, stress, heart rate, steps, distance, calories burned
- HSA/FSA Eligible: yes
- Water Resistance: 5ATM
- Activity Tracking: walking, running
- Exterior Material: titanium
- First listed by seller: June 15, 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 built for the person who wants health insights without wearing a bulky watch or paying a subscription. It's ideal for tracking sleep and daily activity, like checking how your sleep quality changes after evening workouts or monitoring your heart rate during a stressful workday. You slip it on and forget it, because it's lightweight and comfortable enough for all-day wear.
What sets the Lynx apart is the seamless experience from size to charge. The official sizing kit ensures a precise fit, crucial for accurate heart rate and sleep data. I've noticed it catches micro-wakings that other trackers miss, and the battery genuinely lasts 7 days even with continuous monitoring. The charging case is a lifesaver for travel, eliminating the worry of losing a tiny ring. And the app syncs smoothly with Apple Health, so your data lives where you want it.
It's Alexa compatible if you pair it with the Renpho Health app, and the companion app supports voice commands for quick status updates. Whether you're into swimming, hiking, or just want a break from notifications, this ring delivers reliable, subscription-free health tracking you can trust.
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| Brand | RENPHO | SEEKZERO | Kuxlagz | Oura | Jawploy | Victormont |
| Model | R-MZW01 | JZ90-54217-08 | PX02 | Gen 1 | ||
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| Price | €177.09 | €62.28 | €62.28 | €310.58 | €8.89 | €88.98 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | May 14, 2026 | Mar 21, 2026 | Mar 21, 2026 | Jun 24, 2026 | May 14, 2026 | May 27, 2026 |
| Size | 11 | 8 | 9 | |||
| Weight | 0.0881849048 pounds | 1.0 | 0.011464037624 lbs | 4.5g | 0.11 | |
| Battery Life | 7 days | 5-8 days | 7 d | |||
| Water Resistance | 5ATM | Yes | IP68 | |||
RENPHO R-MZW01 Silver Sleep and activity tracking
€177.09
When this device makes sense
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