Bluetooth Chipset: JL6973D4
Bluetooth version:V5.3
Frequency range:20HZ-20KHZ
Speaker:φ13mm
Battery:25 mAhx2(earbuds)
200 mAh(charging box)
Impedance:32 Ω
Charging time:2H
Music playback time:4H
Working distance:10M
Charging port:Type-c

Color:Black/Green/Orange/Purple