BT-F3

Dual mic ENC + Dual Driver 
Version: V5.3  6976D8
Profile: HSP/HFP/A2DP
Charging standard:5V  DC,1A
Net Weight: 42g  
Bluetooth Distance:10Meters
Impedence: 32 Ω
Frequency Range:  20HZ-20K Hz
Sensitivity: 108±3dB
Battery: 50mAh earphone 480mAh 
Driver Size:  10mm x 2pcs
Charging port type: Type C
Charging Time: 1.5 hours
Charging input(Amps):1A
Playtime(50% volume ): 10Hours
Playtime(100%volume): 8Hours
Accessories: Charging cable, L,S ear-caps