[FM Headphones Radio, No AM] Built-in premium DSP filter chip, the FM transistor radio have high reception sensitivity, allows you to enjoy music,NPR or other FM programs or while hiking, cycling or camping outdoors. [Rechargeable Lithium Battery Operated] The radio headphones operated by built-in rechargeable lithium battery (650mAh), which runs up to 24 hours. The headset will be full in about 2.5 hours.Say goodbye to expensive AA or AAA batteries forever. [Preset Favorite Channel] Preset your favorite channel, then you can one-click quick access to it by pressing the M button. It also can be used as an emergency channel. Controls are easy and intuitive, back-lit LED display is convenient for night use. [AUX Available] The walkman headset radio comes with AUX jack (3.5mm aux cable included), suitable for smartphones, PCs, MP3 etc. [Compact & High Comfort] Foldable and light weight makes it easier to carry. Soft memory foam and adjustable headband can perfectly fit your ears, allowing you to wear comfortable even for a long time. All-inclusive large earmuffs can block out outside noises, good for work, mowing or in a nosiy environment. Colour:Black Material:Plastic Package Contents: 1 * Headset Radio 1 * USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.