The Vya Pro Light Combo combines the 250 Pulse headlight and the 100 Lumen Taillight from Light & Motion to help you ride safely. The headlight features auto-sense technology which automatically changes the light from the daytime flash mode to the steady night mode depending on the light conditions at hand. The lights also feature auto-off technology that keeps the light off when it's removed from its mount, and turns the light on automatically when inserted. Up to 250 or 100 lumens, respectively, the two lights in this kit provide enough light to broadcast your position to passing traffic without breaking the bank.