Bluetooth: JeLi 6976D4

Bluetooth version: V5.0

Frequency range: 2.4-2.48GHz

Transmission distance: 10 meters

Headphone battery capacity: 40mAh

Charging bin capacity: 620mAh

Running time: 7 hours

Endurance: Over 6 times

Type: In-ear

Charging interface: Type-C

Material: ABS+PC

Weight: 75g

Dimensions: 93.7w*68.4h*30mm thickness