OUTSTANDING CUSTOMER SERVICE - Backed by Hippih 100% no hassle refund guarantee. If you don\'t love this, return it anytime for a 100% no hassle refund. With that no risk guarantee simply add one to your cart now. Quality assurance. We promise to replace defective product for you within 12 months. WATERPROOF - For safe driving, Waterproof bright bicycle lights in storms or on dark roads or trails, front and back road bike lights. 3 LIGHT MODES - Headlight with strong Light Mode (300 lumens), Dim Light Mode (80 lumens) and SOS Mode (flash). Taillight with STRONG, DIM and FLASH light mode.Powered by two coin batteries (CR2032), lasting up to 70 hours (steady mode) or 96 hours (strobe mode). Extremely portable for you to take it anywhere and be seen anytime. NIGHT SECURITY - incredibly bright bicycle lights in storms or on dark roads or trails, front and back road bike lights. EASILY INSTALL - no tools required, Quick installs or release in seconds for Anti-Theft.