RDA5807 radio module with noise elimination, bass enhancement, high sensitivity, low noise, and strong anti-interference capability. Features 15 sound level settings with potentiometer adjustment for customizable o output. Equipped with digital tube display for easy viewing of radio channels and signal strength. Includes power-off memory, automatic search and storage function, and list management for radio stations. Offers power saving mode for improved energy efficiency. Adjustable channel search threshold to capture more radio signals. Product is delivered as loose parts. Product name: -017B upgraded RDA5807 radio production kit Power supply: Requires 3 AAA batteries (not included) or USB power (choose one) Receive frequency band: 87–108 MHz Maximum operating current: Approximately 250mA (at maximum volume) PCB size: 95.5 x 59 mm Full set weight: Approximately 136g Functional features Color: Transparent Material: Acrylic Package contents: 1 set DIY Radio Assembly Kit (with case) Note: Other items not included. Due to lighting and display differences, actual color may vary slightly from images. Measurement allows an error of +/- 1–3 cm.