LED Bike Taillight for Riding Safely from Ultimate X Safety & No Tools Necessary to install - 3 Settings: set lights to either fast flash, slow flash or constant light - Be Seen and Be Safe. SET of 2 LED Taillights - BE SEEN AND BE SAFE. #holidays #winter #backpack #school # skate #long walks PRICE AND QUALITY - TESTED ONE BY ONE JUST FOR YOU. 3 settings options: flash, strobe and blinking (up to 50.000 hs life for LED). EASY INSTALLATION. NO TOOLS REQUIRED. LIFE TIME WARRANTY - NO HASSLE AND NO QUESTION, just send it back to us and receive a new one.