Basic product parameters Bluetooth version V5.3 Bluetooth chip type/model Jerry 6955F Bluetooth SBC audio decoding Bluetooth Protocol Bluetooth Call Protocol Headphone Protocol (HSP) None Bluetooth hands-free protocol (HFP) HFP Bluetooth Music Bluetooth (A2DP) A2DP Bluetooth Music Remote Control (AVRCP) AVRCP Advanced Music Bluetooth (APTX) / Transmission frequency Bluetooth parameters Transmission frequency 2402-2480MHz Transmit power 12dB Transmission range (Open area without obstructions) 10M Battery standby time (Connected state) about 100H Call time 13 hrs. music playing time music playing time up to 15h Frequency response range: 20Hz ~ 20KHz Sensitivity 110dB ± 3dB Quiescent current 8uA Average standby current 20mA Working current (volume 80%) 20mA Product voltage 3.0V Charging time: 1-2 Hours