This is the Cygolite Dice Duo 110. Features: Designed with road cyclist and commuters in mind the Dice series provide plenty of light to be seen with in a small, rechargeable, and affordable package 8 light modes: High, group, single flash-day, triple flash-day, SteadyPulse-day, single flash-night, triple flash-night and SteadyPulse-night Lights feature Adaptive Flash, which senses day and night, automatically switching to the optimal flashing mode to maximize your visual presence at all times Light mode memory recalls last mode used Versatite flexible mount attaches to most handlebars including aero bars Dice Duo can be used as either a front or rear light by holding the power button 3 seconds! Made in the USA Run time: 1 - 40 hours (headlight) 90 hours (Tail Light) Specifications: Brightness: 110 Lumens (Front), 30 Lumens (Rear) Battery Type: Rechargeable (Micro USB) Run Time: 1 - 90 Hours Beam Color: White, Red Color: Black Weight: 30g