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.