Include: 1 x Bicycle Tail Light, 1 x Strap, 1 x USB Cable Shell Material: Waterproof ABS Water resistance rating: IPX2 Charging time: approximately 2 hours Working time: 3-6 hours depending on lighting mode Easy to install and compatible with various handlebar and seatpost sizes 5 lighting modes: Slow Flash, Flash, Rapid Flash, Warning Light, 100% Brightness, 50% Brightness Package Includes: 1 Piece Bicycle Tail Light 1 Piece Strap 1 Piece USB Cable Note: Slight variations may occur due to manual measurement. Color may vary slightly depending on monitor settings. Our products are made with high-quality materials and designed to provide a reliable user experience. We aim to ship orders promptly. Please review product dimensions carefully to ensure compatibility. Detailed product information, including features and specifications, is provided in the title and description. For any questions, please contact customer support. Thank you for choosing this product.