Supersonic Wireless Bluetooth Headphones in Black

• High performance headphones with clear, rich stereo music • Wireless built-in BT receiver allows you to wirelessly connect your iPad, iPhone, iPod, Android tablet, HDTV, laptop, MP3 player & more• Built-in FM radio• Built-in microphone allows you to talk when you make a phone call• Aux 3.5mm input: gives you the option to connect to non-BT devices• Built-in micro USB input for charging • Built-in micro SD card slot• Adjustable folding design with soft head band and soft-cushioned earcups • Music volume control directly on the headphones• Noise reduction• Built-in rechargeable battery• Duration: music 4hrs. / talk 4hrs. / Standby time: 180hrs. / Charging time: 2hrs. • BT Version: V 4.2 JR• Drivers: 40mm • Impedance: 32ohm • Sensitivity: -80dBm• Frequency Response: 20Hz-20000Hz• Frequency Range: 2.4GHz - 2.48GHz• Transmission Distance: 33FT. • Battery Voltage: 250mAh• Battery Charging Voltage: DC 5V ± 0.5V