Specification:

Regular color: Black, white
Size: 20mm*33mm*20mm
Charging case
Charging compartment battery capacity: 300mah
Size: 50mm* 45mm*25mm
Bluetooth version: Version 5.0
Working voltage: 5v
Headphone battery: 35mah (single)
Play mode: Single/binaural use

Packing list: 

Earphone*1
Usb data cable*1