Cygolite Dice TL– 50 Lumen Bike Tail Light– 5 Night & 3 Daytime Modes– Ultra Compact Design– IP64 Water Resistant– Sturdy Flexible Mount– USB Rechargeable – for Aero Road & Commuter Bicycles, Black;

You'd never expect this much power packed into one cubic inch, but we did exactly thatTM. The new DiceTM 50 tail light is engineered to stand out day and night, delivering powerful and extra wide 50 lumen flashes. Engineered for road cyclists and commuters, it's extra wide beam maximizes your presence from afar while its low profile flexible mount keeps secure on the seat post, including aero shapes. It even senses day and night, automatically switching to the optimal flashing tempo.