Bluetooth Speification:
Bluetooth version: 5V
Supported protocol: support A2DP
AVCTP/AVDTP/AVRCP/HFPSPP/SMP/ATT
GAP/GATT/RFCOMM/SDP/L2CAPPROFILE
Talk time:12H
Music playback time: 15H
Charging time:2 h
Charging voltage: 5v
Bluetooth operating frequency:2402-2480MHZ
Ambient temperature-20+60"c
Transmissiondistance: 10M
Battery capacity:300maH
