Supersonic Bluetooth Headphone with Mircrophone- Blue

* Clear, rich stereo music* Wireless built-in BT receiver allows you to wirelessly connect to your iPad, iPhone, smartphone, Android tablet, HDTV, laptop, MP3 player and more* Built-in FM radio* Seamlessly switch from music to hands-free cell phone calling.* Aux input: gives you the option to connect to non-BT portable devices.* Built-in microphone allows you to talk when you make a phone call* Built-in micro USB imput for charging.* Built-im micro SD card slot* Comfortable adjustable, fording design* Adjustable, soft head band* Music volume control directly on the headphones* Built-in rechargeable battery* AUX cable, USB cable and manual included* BT: V2.1 class 2* Duration: music 7hrs. talk 10hrs.* Standby time: 300hrs.* Charging input voltage: DC5V* Working voltage: 3.3V-3.7V* Driver diameter: 40MM* Headset speaker impedance: 32ohm* Frequency response: 20-20KHz* Frequency range: 2.4GHz-2.48GHz* Transmission distance:10M