Specifications Hign-concerned Chemical:None Special Features:12V motorcycle voltmeter Item Diameter:4cm Item Weight:0.6kg Item Height:5.5cm Item Width:9.5cm Item Length:9.5cm External Testing Certification:iso9001 Model Name:LCD Digital Speedometer Odometer Origin:Mainland China Material:ABS The product you receive depend on your chose, when you make the order, please see the picture more carefully. Description: Working voltage 8-18V Rated voltage DC 12V Working temperature -20 - 70 Celsius Storage temperature -30 - 80 Celsius Digital display speed range 0-199km h Needle display rpm range 0-12000rpm Digital display odo distance range 0-99999.9km Gear indicator 1-6 Backlight Blue Installation diameter 9cm Height 5.3cm Cable Length 12cm Features: Large anti -UV & Anti-g lare LCD screen All-in-one design with digital signal processing system Using chip technology for most of the components Multiple indicator functions as the L R Turn Signal, High Beam, Position Lights, N Lights High withstand voltage up to 100V Waterproof & Anti-vibration Fits for most motorcycle that is with 4 stroke, 2 4 Cylinders (default as 1 cylinder of the setting) Function Knob Instruction: 1.Meter working voltage is 12V. 2.Short press the right button for shift between ODO&TRIP . 3.When the meter displayed TRIP, long press the button 3s to reset the TRIP meter. 4.When the meter displayed ODO, long press the button for shift between KM&MI. 5.Long press the button and power on ,keep 5s to get to the setting mode ,the perimeter bit flash, short press the button to modify the number ,No operation automatically move to the next item. The order is :Perimeter - Speed pulse number -rev pulse number - Fuel sensor - ODO, Long press or power off to exit. 6.Negative control: left&right turn signal ,High beam , Positive control: Outline Marker Lamps. 7.The symbol flash when : voltage >15.0V & voltage < 11.9V; 8.The symbol does not display when: 12.0V