1. When the radio has no radio station stored, it will automatically search for surrounding radio stations and store them (up to 30 radio stations can be stored, and the excess cannot be stored) 2. With RDA5807 radio module, it has the advantages of noise elimination, bass enhancement, high sensitivity, low noise, and strong anti-interference ability 3. With OLED screen, the function display is clearer and the battery power display 4. The battery is rechargeable Equipped with lithium battery charging circuit, it can be charged and used anytime and anywhere 5. Adjust the volume of the radio, there are 15 sound levels with silent mode, you can adjust the sound at will With power-off memory, automatic channel search and storage function With sleep mode, the radio is more power-saving List management of radio stations, modify search channel threshold, and view radio signal strength Kit name: HU-077 OLED display radio production kit Power supply: single 18650 lithium battery Receive radio frequency band: 87-108MHZ Maximum working current: about 300mA (when the volume is adjusted to the maximum) Colour:Transparent Material:ABS Package Contents: 1set x FM Radio DIY Kit (Different batches, styles and colors are random, Specified colors and styles are not accepted,which does not affect the use)