S2-BK
Key Function:
Heart rate variability, nighttime sleep moniting, heart rate measurement, blood oxygen measurement, exercise recoring: counting steps, exercise mileage, calories consumption,uploading App to save exercise date, 24 sports modes, sedentary reminder, low battery reminder, heart rate warning, access Strava/ Apple health.
| APP | Da Rings |
| System |
Android 5.0 and above, IOS 10.0 and above, supporting Bluetooth 5.1 |
| Bluetooth version | BLE5.2 |
| Battery | 15mAh |
| Ring size | #8（φ：18.1mm）#9（φ：18.9mm） #10（φ：19.8mm）#11（φ：20.6mm） |
| Ring thickness | 2.5mm |
| Color | Black，silvery |
| Battery life | 4-6days |
| Charging way | Magnetic charging |
| Waterproof level | 5ATM |
| material | Stainless steel |
| Giftbox size | 102*80*32mm |
| Packing weight | 73g |
| Ctn size | 41.5*33.8*22.1cm |
| Pcs/Ctn | 100 |
| Weight of single ring | 3.5g |
