The blinder mini niner so called for its array of 9 leds these surface mounted leds punch well above their weight with the 11 lumens getting you seen from over 800m away it also comes with an integrated reflector face for added safety with a weight of only 18 grams the light uses its tool less attachment to securely connect to seatposts and frames of 2232mm designed to fit both standard and aero style seatposts