Bluetooth Chip:V5.0 Realtek 8763B

Frequency Responce:2.4026GHz-2.480GHz

Model:Earplugs/Hands-free/A2DP/AVRCP

Working Distace:≥10 米

Single Earbuds:35mAh

Charging Box:500mAh

Playing time:2.5 hours 

Standy Time:≥100 hours

Charging Time:≤1.5 hours

Charging V:3.7V

Bluetooth Chip:CSR64110 V4.2

Frequency Response:20-20KHz

Model: Earbuds/A2DP/AVRCP

Working Distance:10M

Single earphone battery:55 mAh

Charging Box:300 mAh

Playing time: Up to 3 H