Eddie Marine Elite Instruments are sold in kits that include everything you need to upgrade the gauges in your boat, including a 120 mph GPS speedometer with the receiver. All the gauges feature scratch-resistant domed glass lenses with a water seal, UV-resistant coating on the gauge pointer and dial, perimeter-lit dials for night visibility, corrosion-resistant stainless-steel bezels, and brass terminal connectors. The GPS speedometers display direction and are equipped with an odometer and two trip meters (trip meter requires a momentary on/off switch to reset, sold separately). Tachometers work with gas four-stroke engines or outboards with seven-pulse tach output. The tach and speedometer have 3 3/8-inch diameters, and the small gauges are 2 1/16-inch in diameter. All Eddie Marine Elite gauges come with a limited five-year warranty. In addition to the 120 mph GPS speedometer with receiver that updates 10 times per second, the kit includes a 7,000 rpm tachometer, and fuel, water-temperature, oil-pressure volt and trim gauges with all required senders. Retail pricing for the kit starts at $495.