1.Wire: TPE round wire
2.Bluetooth version: JL7003F real stereo
3.Operating frequency: 20Hz ~ 20kHz
4.Transmission distance: > 10 meters
5.Battery: Capacity 280mAh
6.Polymer lithium battery, voltage 3.7V, ordinary protection 7.board charging interface: TYPE-C
8.Charging time: about 2 hours
9.Running time: About 40 hours
10.Talk time: about 40 hours
11.Frequency response range: 20Hz~20KHz
Ear shell: Aluminum alloy anodized ear shell + built-in magnet neck hanging material: silicone
12.Control box/battery box material: ABS
13.Charging port dust plug: TPE soft rubber