Bluetooth Headphones V4.0 Wireless Sports Stereo Sweatproof Earbuds with Built-in Microphone for iPhone, Tablet, Android Phones Windows Phones;

The latest technology of CRS, and backward compatibility V4.0,V3.0,V2.0,V1.2,V1.1.
This product supports Profiles: HFP v1.6 wideband speech(HD voice ready),HSP v1.2,A2DP v1.2,AVRCP v1.4,CVC Version 6.0
Bluetooth Version: Bluetooth V4.0
Bluetooth Protocol: With A2DP high quality stereo sound frequency transmission and long-distance control protocol
Output Power: 10mv
Workable Distance: 10m(Barrier-free Space)
Working Hours: 6 hours for talking time, 4 hours for playing music
Stand-by Time: 200 hours
Charging Time: 1 hours
Charging Voltage: DC5V 300MA
Sensitivity: 90dB±3dB
Impedance: 32Ω±15%
Frequency Response: 20-20000Hz
Cord Length: 600mm
Working frequency: 2.4GHz
Ambient Temperature: -20/60℃
Packing List: 1*Bluetooth Earphone 1*User Manual 1*USB Charging Cable