Bluetooth version: 5.0 <br>Speaker: high-quality composite film true copper ring speaker <br>core Piece: true stereo chip <br>Play time: 2 H <br>headset battery capacity: pure cobalt 35 mAh <br>charging box battery capacity: pure cobalt 300 mAh (with protection board) <br>Effective distance: 10+M <br>earphone weight: 31g (including charging box), 6.4g (a pair of earphones)
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