Bluetooth: V4.1 Profile Support: HSP/HFP/A2DP/AVRCP Frequency Response:20-20kHz Impedance: 16Ω; Sensitivity(SPL): 92±3db Profile Support: A2DP/AVRCP Operating distance: up to 10m (free space) Talk/Music time: up to 3 hrs Standby time: 200 hrs; Charger time: 2 hrs 100% brand new high quality Perfect cutout maximizes the function of mobile phone The installation process is fast, simple, no need to disassemble the phone Easy place inside pocket, purse paper carry alone