1. RDA5807 radio module with noise reduction, bass enhancement, high sensitivity, low noise, and strong anti-interference capability 2. 15-step volume control via potentiometer for customizable audio output 3. Digital tube display for clear viewing of radio station frequency and signal strength 4. Power-off memory function; automatic station search and storage 5. Power-saving mode for improved energy efficiency 6. Adjustable channel search threshold to optimize signal reception 7. Product name: 017B Upgraded RDA5807 Radio Kit 8. Power supply: 3 x AAA batteries (not included) or USB power (select one) 9. Frequency range: 87–108 MHz 10. Maximum operating current: ~250 mA (at maximum volume) 11. PCB size: 95.5 × 59 mm 12. Total kit weight: ~136 g 13. Features: Transparent acrylic enclosure 14. Package includes: 1 × DIY Radio Assembly Kit (with enclosure) 15. Note: Color may vary slightly due to screen settings and lighting conditions. Dimensions are subject to a tolerance of ±1–3 cm.