Features compact and functional cycling helmet light from topeak top mounted button controls make changing lighting modes easy versatile bracket allows light to be mounted on road bike dropbars mounts to any bike helmet visible range 220 degrees 2 white leds and 2 red leds 6 cd light output 2 x cr2032 batteries included 3 lighting modes burn time white constant 70 hours red blinkingwhite blinking 100 hours white constantred constant 50 hours injection moulded plastic lamp housing