Bluetooth V4.0 HandsFree single over ear

Connection: Bluetooth 4.1
Distance: Up to 10m in open area
Frequency: 20 Hz - 20 kHz
Sensitivity: 96 ±3 dB
Charching interface: Micro-USB female
Charging adapter output: DC 5V
Playing time: 6 hours, standby time: 200 hours, talk time: 8 hours.
Battery: Rechargeable lithium-polymer battery
LED indicator
Includes USB charging cable, 2 spare ear buds, instructions. ac adapter sold seperately.