Premium Bike Tail Light - Two Powerful & Ultra Bright All-purpose LED Lights - Tool-free Installation - 240 Degrees Light Spread - Batteries Included YOUR SAFETY COMES FIRST - You have to assure flawless visibility and illumination as you ride. With the ultra-bright waterproof LED tail light combo you will improve your safety on the road 500% ensuring increased visibility to cars, motorcycles and pedestrians over 650 feet. For optimal results use black shelled tail light with white LED as front light and red shelled tail light with red LED as rear light. SUPER CONVENIENT AND NO FUSS TO USE - With one-touch switch design you can turn the 17 lumens of brightness on right away and cycle through the modes by pressing the light's lens: Fast Strobe, Slow Strobe and Steady. Each tail light runs for up to 150 hours on strobe and 50 hours on steady mode on the included 2 CR2032 batteries. EASY, FAST & SECURE MOUNTING AND ONE SIZE FITS ALL - Tool-free handlebar or seat riser mount ensures an easy and fast installment. The flexible silicone strap stretches enough to hug anything you would like to attach the safety light to: your bike, helmet, pack, belt, wherever. HIGHEST QUALITY MATERIAL - Aircraft grade aluminum alloy provides a shock resistant shell that is virtually unbreakable. Its industrial-strength construction is water and weather proof and its finishing is scratch-resistant and anti-abrasive allowing you to ride worry-free in the toughest environments. 100% HASSLE-FREE MONEY-BACK GUARANTEE - We would like to make sure that we serve you with the greatest products possible to fully meet your needs and expectations. However if for whatever reason you're unsatisfied with this ultra bright safety light set we will replace it at no cost or fully refund you. Your risk free purchase is backed by our LIFE TIME WARRANTY and our unique 120% Service Guarantee.