Please click the link to see the instruction:<br /><br /> http:\/\/imgmgr.banggood.com\/images\/upload\/2015\/07\/SKU240108 instruction.doc<br /><br />Description:<br /><br />Functions:<br /><br />Shift between mph and km\/h<br />Trip distance clears<br />Digital display speed<br />Digital display trip distance<br />Digital display odo distance<br />LED display fuel level, low fuel warning<br />Needle display rpm<br />LED shows left and right blinker, N, high-beam, engine, battery etc<br />Time<br />Adjustable wheel perimeter, diameter<br />Adjustable pulse<br /><br />Features:<br /><br />It can be apply to different vehicles with different diameter;<br />It can be apply to different displacement vehicles;<br />Easy assembly<br />High beam, blue<br />Left and right blinker, green<br />This gauge only fit to F2-4 Cylinder bike<br /><br />Note:<br /><br />1. Please check the size measurement chart carefully before making payment.<br />2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm)<br />3. The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.<br />4. Instruction is not included.<br /><br />Specifications:<br /><br />Main Colour: Black<br />Item Size: like the picture show.<br />Package Size: about 15.5cm(L) X 12.5cm(W) X 8cm(H)<br />Display: LCD Digital<br />Display Size: about 5cm(L) X 3cm(W)<br />Type: LCD Speedometer<br />Included Gauges: Odometer<br />Working voltage: 9-16V<br />RPM max display: 15000<br />Working temperature:: -30 ~ 85\u2103<br />Speed,max display: 199km\/h<br />Odometer distance max display: 99999.9km<br />Main Backlight: blue<br /><br />Package Included:<br /><br />1 X Speedometer<br />1 X Speed Sensor<br />2 X Magnets