Bluetooth version：V5.0

Chip Model：AB1511J

Signal Distance：10 M

Working frequency：2.4GHz

Battery capacity: Earphone 45mAh

Charging time: 40mins 

Rechargeable earphone: 15 times

Working time: 4 Hours

Waterproof  Class : IPX5 

Active noise-cancellation function

Bluetooth version：V5.0

Chip Model：AB1511J

Signal Distance：10 M

Working frequency：2.4GHz

Battery capacity: Earphone 45mAh

Charging time: 40mins 

Rechargeable earphone: 15 times

Working time: 4 Hours

Waterproof  Class : IPX5 

Active noise-cancellation function