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Bluetooth: BT4.1
Bluetooth Distance: Max. 10m
Speaker: Stereo 2X1W
Mic: -39dB microphone
Charging Port: Micro USB
Electrical Parameter: DC 5V/0.5A
Battery Capacity: 3.7V/400mAH (1.4WH)
Charging Time: 3hrs
Battery Endurance: 3-6hrs for music