Headset Feature：
Bluetooth version: V5.0 dual modes
Distance: 15-20 meters
Battery: Rechargeable lithium battery 55mAh
Full charge time: 1.5 hours
Play time: about 3.5 - 5 hours * 4
Earplug charging current: 50mA
Microphone sensitivity: -38±2dB
Frequency range: 20~2000Hz
Headphone weight: 7.5g
Waterproof: IPX7
Colours: Black/Green/ Pink

Charging box:
Battery: Rechargeable lithium battery 650mAh (providing 3-4 times power)
Full charge time: 2 hours
Input: 5V 500mA
Output: 5V 100mA
Size: 10.5x8.6x3.6cm

Packing list:
Headset X1PCS
Ear brace X2PCS
Charging line X1PCS
Ear cap X3PCS
Instruction X1PCS