Features:<br /> tModel: B570<br /> tColor: Black <br /> tBluetooth Wireless connnecting (Bluetooth version:V3.0+EDR)<br /> tHandfree・ With Microphone bulit-in<br /> tOperation Range: Bluetooth wireless connecting Up to 30 feet<br /> tSupport MP3 /MAV formats<br /> tBuilt-in Microphone<br /> tWith Audio input slot (3.5mm)<br /> tSupport Micro SD card/TF card input slot up to 32GB<br /> tSupport phone talk<br /> tFM radio function・ Frequency:87MHz-108MHz<br /> tData transmission function・ Can Copy music to play MP3<br /> tSignal to noise ratio: 90DB<br /> tItem made with CSR 3.0 chip so compatible with all Bluetooth enabled devices<br /> tAdstjuable for Adult and Kids・ folding for traveling and using easily<br />Notice:<br /> tNot support lyrics display in the screen.<br /> tIf your desktop or PC not with bluetooth function built-in・ please buy a bluetooth adapter before use this <br /> theadset via bluetooth.<br /> tItem not included any TF card/mico-SD card.<br />Package include:<br /> t1x Bluetooth headphone (Black) <br /> t1 x USB charging cable <br /> t1 x rechargerable 320mah battery (Has been installed in the device)