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 Black Size 10 Lynx Smart Ring
Available offers (5)
Current
Black Size 10
Retailer
€177.09
Available to order
Features
- All-day sleep and activity tracking
- 7-day battery life with charging case
- No subscription fees required
- Monitors blood oxygen and heart rate
- 5ATM waterproof design
- Titanium exterior for durability
- HSA/FSA eligible
- Compatible with iOS and Android
General specs
- Brand: RENPHO
- Model: R-MZW01
- Seller: Retailer
- ID: B0DKX8QMSQ
- APP: Renpho Health App
- Size: 10
- Width: 0.78 Inches
- Height: 0.12 Inches
- Length: 0.78 Inches
- Weight: 0.0881849048 pounds
- Sensors: Chip and sensor for heart rate, blood oxygen, stress, sleep, steps, distance, calories
- Material: Titanium exterior
- Battery Life: 7 days
- Subscription: No subscription fees
- Charging Case: Included
- Compatibility: iOS, Android
- Sizing Method: Official RENPHO Sizing Kit required
- Wearing Guide: Orientation indicator facing palm; remove before applying slippery substances
- FSA/HSA Eligible: Yes
- Water Resistance: 5ATM
- Activity Tracking: Sleep, blood oxygen, heart rate, stress, steps, distance, calories, walking, running
- First listed by seller: May 10, 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
For the data-driven professional who wants a complete health picture without a bulky wristband, the RENPHO LYNX Smart Ring delivers all-day sleep and activity tracking in a sleek, minimalist form. Whether you're analyzing your deep sleep cycles or monitoring stress levels during a busy workday, this ring puts actionable insights at your fingertip—literally. Unlike a watch, it stays out of the way while you type, sleep, or lift weights, making it ideal for anyone who prioritizes comfort and style.
Stop worrying about hidden fees. The Renpho Health app gives you detailed breakdowns of sleep stages, blood oxygen, heart rate, and activity—with no subscription required. Sync your data with Apple Health or Google Health Connect to centralize your wellness journey. The included charging case extends battery life to a full week, so you can travel without hunting for a cable. Simply pop the ring in the case each night for a quick top-up, and it's ready to track your next morning run or afternoon swim (5ATM waterproof).
Finding your perfect fit is simple: use the official RENPHO sizing kit before ordering. Once on, the orientation indicator faces your palm for accurate readings. Remove it when applying lotion to prevent slips. Backed by HSA/FSA eligibility, this ring is a smart investment in your health—no compromises, no subscriptions, just reliable data at your command.
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3PLUS 3PL-RING-8SI 5 ATM Water Resistance
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| Brand | RENPHO | Oura | Free Shark | Oura | Rogbid | 3PLUS |
| Model | R-MZW01 | JZ90-54217-11 | JZ90-54217-08 | 3PL-RING-8SI | ||
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| Price | €177.09 | €310.58 | €53.38 | €310.58 | €88.98 | €160.17 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | May 14, 2026 | Mar 21, 2026 | Apr 1, 2026 | Jun 24, 2026 | Mar 21, 2026 | Mar 21, 2026 |
| Size | 10 | 11 | 8 | 8 | ||
| Width | 0.78 Inches | 1.1023622036 inches | 0.9842519675 in | |||
| Height | 0.12 Inches | 0.2755905509 inches | 0.2755905509 in | |||
| Length | 0.78 Inches | 1.1023622036 inches | 0.9842519675 in | |||
| Weight | 0.0881849048 pounds | 0.011464037624 pounds | 0.011464037624 lbs | |||
| Material | Titanium exterior | Titanium | Titanium | Titanium | Titanium | |
| Battery Life | 7 days | 5 to 8 days | 5-8 days | 7-10 days, Portable charging case with 480mAh battery | Up to 4 Days | |
| Compatibility | iOS, Android | Android, iOS | iOS, Android | Android, iOS | Android 9.0, iOS 10.0+, HarmonyOS | Smartphone Sync |
| Water Resistance | 5ATM | Water resistant | Yes | 5 ATM | ||
RENPHO R-MZW01 Black All-day sleep and activity tracking
€177.09
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