1. When the radio has no stored radio stations, 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 noise elimination, bass enhancement Strong, high sensitivity, low noise, strong anti-interference ability, etc. 3. With OLED screen, the function display is clearer and the battery power is displayed 4. The battery is rechargeable, with lithium battery charging circuit, it can be charged and used anytime and anywhere (18650 rechargeable battery is not included) 5. Adjust the volume of the radio, there are 15 sound levels with silent mode, and the sound can be adjusted at will With power-off memory, automatic search and storage function. With sleep mode, the radio saves more power. List management of radio stations, modify search channel threshold, and view radio signal strength. Kit name:OLED display radio production kit Power supply:1x18650 lithium battery (battery not included) Receive radio frequency band:87-108MHZ Maximum operating current:about 300mA (when the volume is adjusted to the maximum) Note: Different batches may have different silk screen printing/appearance, which will not affect the use. Shipping in disassembled, requires assembly before use. Colour:Blue & Transparent Material:PCB+electronic components+acrylic Package Contents: 1 * FM Radio DIY kit 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.