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Ring vs Tracker
Compare screen-free rings with wrist fitness trackers for sleep comfort, workout feedback, sizing, battery life, and when a smartwatch is the fallback.
RENPHO R-MZW01 Black Size 10 Lynx Smart Ring
Available Options
Current
Black Size 10
Amazon
€145.50
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
Product details
General specs
- Brand: RENPHO
- Model: R-MZW01
- Material: Titanium
- Battery Life: 7 days
- Subscription: None
- Charging Case: Included
- Compatibility: iOS, Android
- Eligible Hsa/Fsa: Yes
- Water Resistance: 5ATM
If you are interested in more details, you can find full information on the seller's page.
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Top live offer
€145.50
Free shipping
New
Third-party seller
FBA
Shippable
Offers updated: 9/2/26
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Price History for seller Amazon
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.
RENPHO R-MZW01 Black All-day sleep and activity tracking
€145.50
Affiliate link. As an Amazon Associate I earn from qualifying purchases.
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