The safety benefits of a versatile tail light for use at night or during the day are huge. And with a spherical lens that directs those lumens more than 1/2 km, even in the brightest California sun, this is our go-to light for the lunch ride. Its six light modes provide multiple options for day or night visibility, which will increase your safety and peace of mind while riding. The tail light runs for up to 77 hours, depending on mode choice, and is charged easily via the built-in USB tab that eliminates the need for a charging cable.