Full duplex sound
  Built-in microphone
  LED indication
  BT version 4.0
  Transmit power Class 2
  Chipset CSR
  SBC decoder support A2DP, AVRCP, HSP, HFP
  Mode HFP1.6, HSP, CVC6.0, HD Voice, Voice Prompts, A2DP, IOS BATTERY- STATE MONITOR, Multipoint Profile
  RF frequency range 2.4GHz
  BT receiving distance 10 meters (no obstruction)
  Battery type Li-Polymer
  Battery capacity 75mA/h
  Normal charging time    Max. 2 hours
  Audio playback time Up to 4.5 hours
  Talk time Up to 5 hours
  Standby time Up to 130 hours
  Dimensions 39.8 x 22.3 x 28.2 mm
  Weight 16g