TWS XI7 wireless bluetooth earphones

* bluetooth version:V5.0
* chip:Jianrong
* effective distance:>10m
* rate:2.4GH-2.48Gz
* earphones:3.7V 55mah
* charging box:3.7V 400mAh
* charging time:1.5 h       calling time:4h
* working temperature environment:-10°-50°
* agreement support:A2DP AVRCP HSP HFP
* color:black           music time:2.5-3.5h
*charging port: micro 5p
* standby time:100h

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