Cygolite Dice Duo USB Front or Rear Light

Functions as 110 lumen white headlight or 30 lumen red tail light 8 headlight and 8 tail light lighting modes engineered for use on roads and commuting Built-in Enhanced Cycling Optics™ expands your field of vision with an extra wide and long range beam compared to typical lighting optics One cubic inch, water resistant design only weighs 30 grams USB rechargeable internal battery lasts up to 90 hours Built-in 24/7 Safety Technology® gives you a powerful selection of 8 night and day modes SteadyPulse® mode alerts motorists with attention grabbing pulses while its overlapping steady beam constantly lights your way at night DayLightning® mode emits lightning-like flashes to highlight your presence in the brightest of daytime hours Adaptive Flash Technology senses day and night, automatically switching to the optimal flash mode 2 in 1 technology allows you to switch from headlight to tail light just by holding the power button for 3 seconds Low battery indicator alerts you when a charge