Price range
€15
– €17
R04 Smart Ring
The R04 Smart Ring is a discreet health and fitness companion that tracks your heart rate, sleep stages, and activity throughout the day and night. With multi-sport modes, it accurately records your workouts while staying comfortable on your finger. Sync data to the app for personalized insights and long-term trends.
- 2 variants
- Heart rate monitoring
Price spread
~15%
Across new variants
Available variants (2)
Choose a variant, then open its detail page for seller-specific information.
HRV & Temperature Monitor
AliExpress
Available to order
- Heart rate variability monitoring
- Body temperature monitoring
- Multi sports modes
Camera & Waterproof
AliExpress
Available to order
- Health sleep monitor
- 5ATM waterproof
- Multi-sport mode
Variant comparison
Compare prices, availability, and key variant differences in one table.
| Feature | HRV & Temperature Monitor | Camera & Waterproof |
|---|---|---|
| Price | €15.17 | €17.46 |
| Updated | Jun 18, 2026 | Jun 18, 2026 |
| Availability | Available to order | Available to order |
| Most technical parameters are similar across variants. | ||
Live offers
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Check current availability on Amazon.
Overview
Compare R04 Smart Ring variants, pricing tiers and key differences.
Learn moreHow variants differ
Most technical parameters are similar across variants.
Who each variant is for
- Start with your budget: the visible price spread across variants is about 15%.
Reviews
No written reviews yet
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| Brand | VAMOTRA | VAMOTRA | Secofy | |||
| Model | R04 | O Ring | ||||
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| Price | €14.61 | €209.42 | €34.90 | €34.90 | €16.48 | €34.90 |
| Seller | AliExpress | Amazon | Amazon | Amazon | AliExpress | Amazon |
| Update | Jun 18, 2026 | May 20, 2026 | May 20, 2026 | Apr 17, 2026 | Jun 18, 2026 | May 20, 2026 |
| Water Resistance | 164 ft | 5ATM (water resistant up to 164 ft) | 10ATM | 5ATM | 50 meters (164 ft) | |
| Compatibility | Android, iOS | iPhone, Android | iPhone, Android | iPhone, Android | ||