U&I Titanic Series.

Bluetooth Version : 5.0 Talking Time : Up to 12 hours Music Time : Up yo 10 hours Standby Time : Over 50 hours Charging Time : 1-2 hours Charging Type : Micro USB Charging Power : DC5V 135 mAh Transmission Distance : 32ft. (10m) Output Power : 3mW x 2 Sensitivity : 110db at 1KHz Impedance : 16 Ohm Frequency Range : 20Hz - 20KHz THD : <1% Support Profiles : HSP, HFP, A2DP, AVRCP Mic Sensitivity : -42db Mic Impedance : 2200 Ohm