Product information:  

Wireless connection: Bluetooth TM5.3
Communication distance: 10 meters (accessible open environment)
Headphone battery life: about 5 hours
Battery life including charging case: about 20 hours
Headphone charging time: approximately 2 hours
Charging time for the charging case: approximately 2 hours
Earphone size: 32.7 * 18.22 * 19.6mm
Charging case size: 54.75 * 47.1 * 22.1mm
Charging interface: Type-C