Chippy 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 handlebars and posts of 22ndash32mm designed to fit both standard and oversize handlebars and aero style seatposts light output front 20 lumens rear 11 lumens dimensions 31 x 31 x 14mm weight 18g storage mode to activate storage mode make sure light is first turned off then hold down the onoff button for 5