Best Reception FM HeadphonesOnly supports FM(no AM). Built-in premium DSP filter chip, the FM transistor radio have super receiving sensitivity and stable/clear reception. It allows you to enjoy music,NPR or other FM programs at home or while walking, cycling or camping outdoors. Automatic Search& Store, PresetThis digital FM headset can automatic search and store stations, easy to operate and can quickly find and store clear FM channels. The M1 button let you to preset 1 favorite station and allows one-click easy access to your favorvite station. Rechargeable Lithium Battery OperatedThe radio headphones operated by built-in rechargeable lithium battery, which runs up to 24 hours. The headset will be full charged in about 2.5 hours.Say goodbye to expensive AA or AAA batteries forever. AUX Available/Crystal Clear Sound The walkman headset radio comes with AUX jack(3.5mm aux cable included), suitable for smartphones, PCs, MP3 etc. Crystal clear sound let you to