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-Blue tooth IC: CSR8635
-Speaker Type: Bone conduction technology speaker, 1w dual speaker
-Battery: 350mAh Polymer battery
-Mic Anti: interference microphones,‐50DB
-Play time: 7h
-Standby time: 15days
-Effective range: 15m
-Mono/Stereo: Stereo
-Blue tooth: Version 4.0
-Weight: 133g
-Bluetooth Class(1/II): II
-Bluetooth Profile: a2dp/HFP,HSP,AVRCP,GAVDP,AVDTP
-Receiving: Sensitivity 88dBm
-Impedance: 32Ω
-Frequency range 20‐20KHz
-Fully charged: 2h