Unleashing 200 lumen output, the patent pending Hotshot Pro 200 is the most powerful single LED tail light you can get today. Sporting an aggressive design and powerful output, the Hotshot Pro 200 is engineered from the ground up to stand out in the brightest of daytime and at night with intense 200 lumen flashes. Exclusive 2 button design lets you fully adjust the tempo of each flash mode to maximize motorist awareness. It even senses day and night, automatically adjusting the brightness of the flashing modes. Every bit the road cyclist's tail light, its extra wide beam lens maximizes your presence from afar, and get the most out of your ride with up to 210 hours of run time. Built tough and water resistant. Its new low profile flexible mount makes it easy to use on standard and aero seat posts. Buy with confidence in Cygolite, as every light is designed, engineered, and assembled in the USA to rigorous quality and testing protocols - outshining and outlasting cheap imitations. For customer service, email and phone support with live customer personnel offers you fast and easy assistance from right here in the USA.