Brand Cannice Model iblue2s Quantity 1 Color White + Silver Bluetooth Version v2.1 Ear Coupling Behind the Neck / Earbud Talk Time 4 Hour Standby Time 200 Hour Operating Range 10 meter Compatibility v2.0 Microphone Yes Radio N/A Supports Music Format MP3 Power Supply Built-in Battery Built-in Battery Capacity 90mAh Other Features Bluetooth mode: Hands free / Headphone / AV; Wireless frequency: 2.402~2.480GHz; Transmission power: Class 2; Stereo sound performance; Suitable for Iphone 4 / 4S / 5 Ipad 2 / the New Ipad use Packing List 1 x Bluetooth headset 1 x Chinese / English user manual 1 x Ear hook 1 x Ear cap 1 x USB cable (185cm) 1 x Earphone (47cm)