The Cygolite Hotshot Pro 150 is engineered from the ground up to stand out in the brightest of daytime hours and at night with intense 150 lumen flashes. Exclusive 2 button design lets you fully adjust the tempo of each flash mode to maximize motorist awareness. Every bit the road cyclist's tail light, its extra wide beam lens maximizes your presence from afar and a specially treated internal body disperses a radiant glow to keep nearby motorists alert.