Wireless Headphones feature Bluetooth technology to provide an enhanced listening experience without being plugged in. Long battery life gives you up to 12 hours of play or talk time. Boom-style microphone allows hands-free conversations on the phone. Adjustable, slide headband provides a customizable fit for most users. MicroSD card slot allows you to insert your card to listen to songs without the need for a device. It includes a micro USB charging cable, FM radio function (frequency 87.5-108.OHZ) and backup 6' cable with a 3.5mm plug. Headphones are compatible with all wireless supported devices.Wireless Headphones feature Bluetooth technology to provide an enhanced listening experience without being plugged in. Long battery life gives you up to 12 hours of play or talk time. Boom-style microphone allows hands-free conversations on the phone. Adjustable, slide headband provides a customizable fit for most users. MicroSD card slot allows you to insert your card to listen to songs without the need for a device. It includes a micro USB charging cable, FM radio function (frequency 87.5-108.OHZ) and backup 6' cable with a 3.5mm plug. Headphones are compatible with all wireless supported devices.