Model No.: KZT09
Air Conduction Headphone
Bluetooth version: JL5.3  (Real Stereo)
Frequence response: 20Hz-20KHz
Driver Size :14.2mm 
Battery capacity: 55mAh
Play and talk time: 4~5H
Work distance: 15M
Charging time: 2H
Standby Time: 100H
Charging indicator
Touch control 
Charging port : Type C
Physical dimension: 134x115x38mm
Weight of product :15g
Color :White/Black