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M4 Smart band 4 Fitness Tracker Watch Sport bracelet Heart Rate Blood Pressure Smartband Monitor Health Wristband 9
Specifications:
- Origin: CN(Origin)
- Type: Other
- Theoretical standy time: 10 days
- Package size: 140 * 80 * 50mm / 5.5 * 3.1 * 2.0in
- Model Number: M4
- Color: blue, black, red (optional)
- Battery: 3.7V, 90mAh
- Free shipping*
- 100 days returns
- Low prices
- 5 million products