As a practical equiment for your Motorcycle.Engine trouble light reminding.Displaying time. travel distance.Waterproof, -proof, durable.Easy installation and simple operation.Product Name: Motorcycle OdometerOperating voltage: 10V-15VSpeed calibration: 42.5Hz corresponds to 60KM/HSpeed calibration: 166Hz corresponds to 10*1000r/minLCD screen: 7 colors backlight short press to switchNeedle Display Rpm Range 0-15000.Voltage: Less than 11.3V undervoltage flashes, higher than 11.7V undervoltage is not displayedcolour:BlackMaterial:plasticPackage Contents:1 x LCD odometerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.