DIY FM Radio Electronic Kit 87-108MHZ Adjustable Frequency OLED Display Radio Assembly DIY Soldering Practice Parts RDA5807S Product features: 1. When the radio does not have a stored radio station, it automatically search for surrounding radio stations and store them (up to 30 radio stations can be stored, any more cannot be stored) 2. Paired with RDA5807 radio module, it has the advantages of noise cancellation, enhancement, high sensitivity, low noise, and strong anti-interference ability 3. Paired with OLED screen, the function display is clearer and the battery level is displayed 4. Rechargeable battery with lithium battery charging circuit, allowing for charging anytime, anywhere 5. Adjust the volume of the radio, with 15 sound levels paired with a mute mode, allowing you to freely adjust the sound 6. Equipped with power-off memory, automatic station search and storage function 7. Equipped with sleep mode, making the radio more energy-efficient 8. List management of radio stations, modify search channel thresholds, and view radio signal strength Product parameters: Kit Name: OLED Display Radio Production Kit Power supply method: single 18650 lithium battery power supply Receiving radio frequency band: 87-108MHz Maximum operating current: approximately 300mA (with the sound set to maximum) PCB size: 115.8 * 75mm *Only supports battery power supply, the power switch needs to be turned off when charging the battery Color: As shown Material: PCB Package Contents: Product List: 1X radio kit Attention: DIY of individual parts requires self welding and assembly, and welding tools must be provided! 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.