RavX Flash X Super Disc Rotatable Rear Light 1/2 Watt Bright Emitter 2 Modes (Steady, flash) Bracket Pivots 360 to Ensure Optimum Visibility no Matter Where you Install it. Tool Free Taillight Bracket Weight: 41g/ CD: 190/ Visibility: 1000m/3280ft./ Battery Life: 100 Hours