1. YOUR MODEL: Our led light kit is specially designed for building kits. After adding our lights to the original building blocks, different colors of lights and wires match your model perfectly, making it look advanced and gorgeous. 2. MATERIAL AND TECHNOLOGY: Our led lights are compact and delicate. The combination of craftsmanship and handmade ensures better quality and details. The light wire will be hidden when installed on the model, achieving the perfect illumination effect of led lights. 3. INSTALLATION GUIDE: Comes with detailed instruction in the form of pictures, guiding you step by step on how to install and use. It's easy to find the way and enjoy the DIY process. 4. POWER SUPPLY SAFETY: All lights are powered by only 5v. Low voltage means more . Comes with USB cable and battery box (Excluding batteries), which can be powered by power bank/wall charger/other device with usb port (the output voltage should be less than 6V), making it easy to operate.