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.
R03 Smart Ring: Health Monitor
You want to track your health without the bulk of a wristband. The R03 Smart Ring gives you 24/7 activity and sleep monitoring in a comfortable, waterproof design. Wear it while swimming, showering, or sleeping—it's rated 5ATM, so you don't have to take it off. The ring automatically detects your heart rate, steps, and sleep stages, then syncs with your phone.
Forget to charge your smartwatch? This ring lasts up to 7 days on a single charge. The sleep tracker shows you exactly how much deep sleep you got, so you can adjust your bedtime habits. Multi-sport modes let you log runs, cycling, and more without tapping a screen. It's Alexa compatible, so you can check your stats hands-free. Get the insights you need without the distractions of a bigger device.
Features
- Sleep Tracker
- Multi Sport Modes
- 5ATM Waterproof
- Fitness
- Android Compatibility
- iOS Compatibility
- Health Monitor
General specs
- Model: R03
- Seller: AliExpress
- ID: 1005011972721312
- Model: R03
- Sport Modes: Multi
- Compatibility: Android, IOS
- Sleep Tracker: Yes
- Health Monitor: Yes
- Fitness Tracker: Yes
- Target Audience: Men, Women
- Water Resistance: 5ATM
- First listed by seller: June 18, 2026
If you are interested in more details, you can find full information on the seller's page.
€20.97
Last price update: 7/2/26
Out of stock
Price History for seller AliExpress
| Date | Price |
|---|---|
| 7/2/26 | €20.97 |
| 6/18/26 | €21.10 |
Shipping options
Delivery to 
United States
United States
Available
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| Brand | Amzhero | yiuzuik | FITVII | |||
| Model | R03 | 2026 | Slim | ID205U | ||
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| Price | €20.97 | €43.29 | €21.64 | €21.34 | €43.29 | €17.31 |
| Seller | AliExpress | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Jul 2, 2026 | May 20, 2026 | May 20, 2026 | May 29, 2026 | Jun 19, 2026 | May 5, 2026 |
| Compatibility | Android, IOS | iPhone, Android smartphone | Android 7.0+, iOS 13.0+, Bluetooth 4.0 | |||
| Water Resistance | 5ATM | 5ATM | 5 ATM | |||
| Sports Modes | 24 | 25 modes (running, cycling, skipping, etc.) | 7 | |||
| Battery Life | 10-14 days typical use, 30 days standby | 7-10 days | 5, 7 | |||
Smart Ring Health Monitor
€20.97
When this device makes sense
Product confidence
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