Product information:

Bluetooth chip: 5.0
Battery capacity: charging chamber 600mA, headset 40mA
Earphone speaker: 13cm copper ring speaker
Effective distance: 10m
Playback duration: 4 hours
Charging duration: one hour for headphones, three hours for charging compartment
Charging chamber size: 104.6 * 58 * 34mm 89g
Headphone size: 33.4 * 18.5 * 19mm 3.6g * 2

Packing list:

Charging chamber * 1
Headset * 2