cool headsets bluetooth headset wireless

cool headsets bluetooth headset wireless   cool headsets bluetooth headset wireless have soft leather cushioned pressure relief design for maximum comfort even after long wearing hours, adjustable headband design to fit most head figures.   Description of cool headsets bluetooth headset wireless 1) British CSR4.0 version of low-power chips
2) Effective range: 10m barrier free
3) Standby time after pairing: about 180 hours
4) Unpaired standby time after Bluetooth Starting up: auto power-off after 10 minutes
5) Socket diameter: 3.5mm
6) Battery charging: 5V DC, AC adapter input/ 100-240V
7) Charging time: 2-3 hours
8) Pairing: one-to-one, it can match with multiple primary devices, but it should dredge connection in turn
9) Telephone: built-in the function of voice communication, sensitivity-45DB
10) Joint: 2.5DC line battery charging   Pictures of  cool headsets bluetooth headset wireless Contact me