or
Bison i5S Bluetooth V4.1 Stereo Headset, Bluetooth V4.1 + EDR, up to 5 hours talk time,10 meter range, Frequency Response Range 20-20000Hz, Sensitivity 19±3dB, able to connect to devices at the same time, A2DP stereo music, digital signal processing
Wireless Bluetooth V4.1
Upto 16 hr
Upto 5 hr
Upto 10 meter
20-20000Hz
19±3dB
Able to connect 2 devices at the same time , digital signal processing