Specification:
1. Product model: D-02
2. bluetooth version: 4.1
3. Support agreement: HSP / HFP / A2DP / AVRCP
4. Battery capacity: 3.7V / 55mAh
5. Talk time: 4h
6. Play time: 3h
7. Charging time: 1h
8. Product Size: 45 * 28 * 60mm
9. Product weight: 0.58g
10. Optional color: Silver & Black, Silver & Red, Black & Red
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