Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
Amwentu BJ02 Smart Ring
Product details
General specs
- Brand: Amwentu
- Model: BJ02
Starting from £16.56
Last price update: 4/15/26
The price may have changed — check it on the seller's site
Amwentu smart ring for health, sleep, and fitness tracking, with app-based data viewing.
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| Brand | Amwentu | Oura | Shenzhen Yawell Intelligent Technology Co.,Ltd | CNBRO | Herz | Oura |
| Model | BJ02 | JZ90-1003-06 | R06 | JYR10PFS | P1 | JZ90-54144-11 |
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| Price | £16.56 | £254.47 | £30.27 | £18.14 | £45.40 | £264.13 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Apr 15, 2026 | Mar 21, 2026 | May 1, 2026 | Mar 21, 2026 | May 9, 2026 | Mar 21, 2026 |
| batteries | 1 CR5 batteries required. | 1 Lithium Ion batteries required. (included) | 1 Lithium Polymer batteries required. (included) | 1 Lithium Metal batteries required. (included) | 1 Nonstandard Battery batteries required. (included) | |
| Item Weight | 2.39 ounces | 7.8 ounces | 2.39 ounces | 3.52 ounces | 0.127 ounces | |
| Country of Origin | China | Estonia | China | China | ||
| Package Dimensions | 3.15 x 3.11 x 1.02 inches | 4.02 x 3.11 x 1.26 inches | 0.39 x 0.39 x 0.39 inches | 15.55 x 12.56 x 9.33 inches | ||
| Date First Available | January 4, 2025 | January 19, 2024 | March 21, 2025 | |||
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