ECE approved. Fits directly to 1" or 1-1/4" handlebars with included clamp. Functions include speedometer odometer (KMH or MPH) max speed memory and re-call RPM dual temp. gauge (air & engine) fuel gauge clock oil change notification low battery warning and LCD indicators for turn signal Hi-Lo beam neutral and oil pressure. Speedo can be driven from stock or (supplied) custom pick-up ECU crank position sensor (00-up H-D) or ignition coil. Quite compact with dimensions of approx. 4.70" (11.9cm) x 1.70" (4.3cm) x 1.14" (2.9cm). Includes elaborate installation & set-up instructions. Note: See 900404 for a compatible active sensor for Asura speedometers. Universal