Bluetooth earphones Yison E14 Black      

Technical Specifications:
Version: V4.2
Supported:HPF1.5/HSP 1.1/A2DP 1.3/AVRCP1.5
Working Frequency: 2402MHz-2480MHz
Sensitivity: -89dB
Range: ?10M
Best work range: ?8M
Max Headset Power: 10mW
Audio S/N: 94dB
Frequency Response: 20-20Khz
Speaker Type: 10mm
Impedance: 16Ω ±15%
Battery: Lithium Battery 3.7V/65mAh
Music TIme: About 3 Hours (70% Battery)
Talk Time: About 3 Hours (90% Battery)
Charging Input: Micro USB