Bluetooth Version V4.1 Bluetooth Profile HFP v1.6 wideband speech (HD voice ready), HSP v1.2, A2DP v1.2, AVRCP v1.4, Apt-x Frequency response 20Hz – 20KHz Charging Voltage DC 5V Battery Type Rechargeable Li-Polymer 60mAh Music mode 4 hrs Talk Time 5 hrs Standby Time 150 hours Charging Time 1.5 hours Charging Input Port Micro USB Color Black