The most innovative bike taillight ever designed, Vya Pro blends ultra-powerful output with revolutionary smart features. The piercing 100 lumen beam is easily visible over an impressive distance of 2km, even in bright daylight. The Pro version builds on Vya's innovations with a horizontal layout with custom engineered optic providing a concentrated burst of red light ideal for road riding in fast moving traffic. What separates Vya from traditional taillights are smart auto-on/off sensors - start riding and the light turns on automatically and will shut itself off after the ride, with a delay built in for stoplights. The scientifically designed SafePulse beam pattern not only gets noticed from motorists, but allows the driver to accurately judge distance from the rider and their direction of travel - a safety feature not possible with strobing lights. Attaching Vya is effortless with a simple clockwise 1/4 turn into the mount locking the light in place and activating the auto-on feature. An optional seat rail mount is a great addition to the platform to get safety lighting even higher on the bike to be more in a driver's line of sight. When it comes time to recharge, remove Vya from the mount in seconds and insert the integrated USB paddle directly into a computer or USB power outlet - no cables keeps recharging simple and convenient. The next evolution in bike safety, Vya Pro is unmatched in the market for its power, compact design, and commuter convenience.