1. RDA5807 radio module, with sound elimination, bass enhancement, high sensitivity, low noise, strong anti-interference ability and other advantages. 2. There are 15 sound gears with potentiometer adjustment, which can adjust to the sound that satisfies you. 3. Digital tube display, more convenient to check the radio channel and radio signal strength. 4. With power-off memory, automatic search and storage function list management radio. 5. With power saving mode, the radio saves more power. Modify the search channel threshold to capture more radio signals. Kit name:RDA5807 radio production kit Power supply:3xAAA batteries or USB power supply (batteries not included) Receive radio frequency band:87-108MHZ Maximum operating current:about 250mA (when the volume is adjusted to the maximum) Note: This is a DIY kit and you need to assemble it yourself. Different batches may have different silk screen printing/appearance, which not affect the use. The colors of spare parts may be different due to different batches, but the functions are the same and not affect the use. Colour: & parent Material:PCB+electronic components+acrylic Package Contents: 1 * Radio DIY kit(Shipping in disassembled, requires assembly before use.) 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.