Bluetooth version：V4.2

Chip Model：AB1511J

Signal Distance：10M

Working frequency：2.400GH-z-2.480GH-z

Battery capacity: Earphone 45mAh ; Charging box 1600mAh.

Charging time: 40mins 

Rechargeable earphone: 15 times

Working time：Single ear 3.5 hours, double ear 2.5 hours

Standby time：Single ear 100 hours, double ear 60 hours

Waterproof  Class : IPX5 

Can charging for android phone / iPhone / Type-C / Siri