Bluetooth Handfree,Bluetooth hand free,cellphone headset,bluetooth earphone Bluetooth Handfree,Bluetooth hand free,cellphone headset,bluetooth earphoneDescription:-Operation range: Up to 10 meters -Bluetooth version: V2.0+EDR-Solution: CSR ... , volume adjustment, call waiting*, Voice recognition* *Some functions need the support of the -phone feature or network serviceAccessories:USB cable ,User ...