Backlit Digital Mini 60mm GPS Speedometer. Great for Auto, truck, ATV/UTV, Motorcycle or marine applications GPS satellite Positioning to measure and display current speed with MAX Speed recall. Top speed 999 MPH. Will display, top speed, high speed alerts, odometer, voltage (vehicle battery) and time. Settings for MPH, Nautical MPH or KMH Strong internal antenna. GPS will automatically positioning UTC or User can set the time manually. Easy to install. No external antenna needed, just connect to DC 12-24 Volt. Fits into 60mm (2.36") standard dash hole OZ-USA Digital GPS Speedometer Backlight Speed Meter Counter Waterproof with High Speed Recall For ATV UTV Motorcycle Automobile Motor Vehicle This unit works on all 12v and 24v vehicles and marine applications. It has a GPS speedometer function, Clock function,Voltage indicator function GPS Speedometer Feature GPS satellite Positioning to measure and display current speed. Max speed viewed. Settable High-speed/low-speed alarms. when speed exceeds the set value Red LED will flash to alarm. Speedometer refresh rate: 0.2 seconds. Other Features Easy to install, simply connect to power. No external antenna needed Multivolt, will work on both 12v and 24v applications. Low-power consumption: standard current 6 μA. Has reliable EEPROM memory for automatic data storage. Dustproof / waterproof level: IP65. Manufactured in China to OZ-USA's high end specifications. USA Shipping (California), USA Warranty: 1 year.