KRY FRONT AVENUE F-65 USB BLACK65 Lumen headlight that can be used horizontally or vertically Modes include High Steady, Low Steady, Daylight Pulse, Nitelight Pulse and Economic Flash USB rechargeable no batteries to buy or replace Side illumination ports allow cyclist to be seen when riding across traffic lanes Memory Function Light turns on at the last mode it was turned off Power saving function 10% power or less, lights will automatically switch to lowest lumen output Built in