The ALLTY 1500S, a brand-new upgraded version of the ALLTY 1500, is specially tailored for mountain biking, trail crossing, road cycling, and daily commuting. It continues the classic, sleek design of the previous model, and boasts a main light that utilizes a high-power LED with a max output of 1500 lumens, with an always-on daytime running light, keeping you safe day and night.