The Bontrager Flare R USB Rear Light is an eye catching tail light that has your back going through some busy traffic of dark non-lit roads. Make every ride safer with the Flare R and the safety of 65 Lumens of visibility. The balanced optics allow for a wide beam and also focused light beams for optimum lighting. designed for day and night. Powerful, compact, and rechargeable, Flare R is the first light to be designed from the ground up for daylight visibility. The light boasts a wide ranging 270 degrees of visibility which means even pulling in out of roads, cars and other road users will be able to see you in almost direction.