Product information：  

Headphone type: sports
Frequency response range: 2.4-2.483GHz
Bluetooth chip: Zhongke Lanxun 5335B
Headphone battery capacity: 0.407W (1 10mah)
Impedance: 32
Cord length: 52CM
Transmission distance: 10 meters
Sensitivity: 102+/-2db
Listening time: 5-6 hours
Cord length size: 54cm
Talk time: 5-6 hours
Charging box size: 6.5*2.8*3cm
Standby time: about 220 hours
Headphone weight: 19g