A. Simple operation, easy welding, with 4ohm 3W speaker for better sound quality. B. Equipped with RDA5807 radio module, featuring noise elimination, bass enhancement, high sensitivity, low noise, and strong anti-interference ability. C. Button adjustment for switching channels, increasing/decreasing volume, clearing all channels, and searching and saving channels again. D. 15 sound gear adjustments available to set the desired sound. E. LED lights indicate the operating status. F. Functions include power-off memory, automatic search and save. G. Kit name: RDA5807 radio production kit. H. Power supply: 3 x AAA batteries or USB 5V power supply (battery not included). I. Receive radio frequency band: 87-108MHZ. J. Maximum operating current: About 400mA (when volume is turned up to the maximum). K. Note: This is a DIY kit and requires self-assembly. L. Different batches may have variations in silk screen printing/appearance, which do not affect use. M. Colour: Red & Transparent. N. Material: PCB + electronic components + acrylic. O. Package Contents: 1 * Radio DIY kit (shipped disassembled, requires assembly before use). Only the above package content is included; other products are not included. P. Note: Light reflection and different displays may cause slight color differences between the item in the picture and the real thing. The measurement allowed error is +/- 1-3cm.