Features: 1. Precise incisions and interfaces ensure a perfect fit, suitable for mounting position and easy to install. 2. The product uses high-quality materials, effectively resists corrosion and wear, and is durable. 3. Professional chip set provides reliable performance in the system. 4. Easy to operate, anti-aging, and extended service life. 5. DIY colorful heart-shaped light with good brightness. Specifications: Circuit board material: Double-sided 1.6mm FR-4 plate Color: As shown in picture Operating voltage: DC 4.5-5V Power supply: 3 x AA batteries (not included) or USB charger Size: Approx. 9 x 10 x 0.2 cm / 3.5 x 3.9 x 0.08 in Packing List: 1 x Heart board module 1 x Data cable 1 x Accessory bag