Description: Solar energy rechargeable, no charging needed Made of PC plastic, super waterproof,make you riding freely regardless of rain. High brightness and energy saving LED. Lighting Mode: Long bright/Slow flashing/Strobe Applicable: electric vehicles/motorcycles/bicycles/cars/night road operations Specification: Size: 9.5x4x2.2cm / 3.74x1.57x0.87inch Number of LED: 10 Working Voltage: 3.7V Installation method: High viscosity double-sided tape Note: Before installation, clean the pasting position, dry and install it. Package Includes: 1pc Solar LED Warning Light Note: The color may be different for different display, pls understand Pls allow 1-3mm error due to hand tste, thank you