[USAGE: The Light Set is used to light up 42171 Mercedes-AMG F1 W14 E Performance (NOT include the Lego Set). PRODUCT FEATURE: The Light is made use of original material purely handmade. It contains 1 USB light kits instruction guide battery box. Plug in power and light up your building blocks with our amazing design! TIPS: Prepare three AA Batteries or USB Charger and Voltage should be less than 5V to avoid burning. INSTALLATION INSTRUCTION: The light set installation is done to your preference. Please install your led light carefully no hard pulling and no need to bend or shake it. "ABOUT US: Specialized in custom-designed Lighting Kit toys we aim to supply customer with good products and quality services. Make your creations unique with your rich imagination and creativity. Let s light up your bricks and bring them new vitality. If you have any problems please do not hesitate to contact us. Have a happy shopping experience!"]