1. RDA5807 radio module with noise reduction, bass enhancement, high sensitivity, low noise, and strong anti-interference capability 2. 15-step volume control with potentiometer adjustment 3. Digital tube display for clear viewing of radio channels and signal strength 4. Power-off memory, automatic station search, and preset station storage 5. Power-saving mode for improved energy efficiency 6. Adjustable channel search threshold to capture more radio signals 7. Product name: 017B Upgraded RDA5807 Radio Kit 8. Power supply: 3 x AAA batteries (not included) or USB power (choose one) 9. Frequency range: 87–108 MHz 10. Maximum operating current: approx. 250 mA (at maximum volume) 11. PCB size: 95.5 × 59 mm 12. Total weight: approx. 136 g 13. Color: transparent 14. Material: acrylic 15. Package includes: 1 x DIY radio assembly kit (with case) 16. Note: Colors may vary slightly due to screen settings and lighting. Dimensions are subject to a tolerance of ±1–3 cm.