STAINLESS FOR CLOCKS COUNTER GPS 0-200KM/H A single waveform that can be saved: The default prompt is a single waveform that will not be cleared when power is turned off. Press and hold the rubber on the back for five seconds to clear a single run. The cumulative mileage will not be deleted if the power is off (total mileage cannot be deleted). Wide application: COG is to display the direction of navigation of the ship and display the position in the car. Suitable for a full range of stepper instruments, it can be used for cars, engines, boats, motorhomes, yachts, engineering machinery, etc. Durable Construction: Made of stainless steel and ABS, it can be used in acidic, alkaline and humid environments, durable and has a long service life. Waterproof and dustproof grade, with curved glass, does not fog up, no need to worry about the damage that bad weather can cause. Stable performance: low power consumption, long service life and high accuracy. Thanks to the ultra-wide operating voltage design, the long-term operating voltage is from 9 to 32 V, up to a maximum of 36 V. High and low temperature resistance. Easy installation: install the 85 MM caliber and make sure there is at least 55 MM space behind the dashboard. The black wire is connected to the negative pole, and the remaining wires are connected to the positive pole. With detailed instructions, it will clearly describe the installation, wiring, and usage features. Specification: Item Type: GPS Speedometer Material: stainless steel ABS Dial color: black, white Screen: OLED screen Dial backlight color: 7 colors (can be adjusted manually, can be switched automatically) Signal: GPS Range: 0-200 KM/H Operating voltage: 9-32 V DC Operating temperature:-30 - 75 Storage temperature:-40 - 80 Applicable scenarios: Universal use in cars, engines, boats, motorhomes, yachts, engineering machinery, etc. Caliber of installation: Approx. 85 mm/3,35 inch and make sure there is at least 55 mm/2,17 inch free space behind the dashboard List of packages: 1 x Speedometer 1 x GPS Receiver 1 x Manual