①. Radio Headphones Portable Stereo FM Radio with Good Reception, DSP Digital Personal Wireless Headphones with Preset Stations, Powered by AA Batteries FM Radio; FM Frequency 50 - 108MHz, Wide Frequency Range, DSP Radio Uses Advanced Digital Signal Processing to Reduce Interference and Improve Sound Clarity. FM Radio Headphones Can Be Used with FM Transmitters for Simultaneous Translation, Listening Aids, Churches, Tour Guides. ②. Portable Headphone Radio; Walkman - style portable radio headphones that can be put in a backpack. The foldable design makes it easy to carry when going for a walk, jog, camping, etc. Wear this headphone radio and listen to the latest news and music during your morning walk. ③. Battery Powered Radio; Uses 2 AA batteries (not included) for up to 30 hours of listening time. Low power consumption allows this headphone radio to work for a long time. The saved stations will not be lost when the power is turned off or the battery is replaced. ④. Wired headphones; Connect a 3.5mm audio cable (not included) as a wired headphone. Suitable for various audio devices, smartphones, PCs, tablets, etc. Soft ear cushions and padded headband ensure comfortable wearing all day long. ⑤. Preset radio station; This FM radio supports automatic search and memory station function, you can save 1 favorite preset station and select it with one click. ⑥. If you encounter any product problems, please contact us, you will get a response and answer. Thank you for purchasing the products, and wish you a happy day.