Feature 1Due to the use of stepping motor, which can greatly improve speedometer sensitivity. 2The numbers and pointer on the dial have a red backlight, let you easy read at night. 3Has the good characteristics of low power consumption, long life, high precision and high definition. 4Come with English manual, strongly recommended that most cars or motors are professionally installed. 5Produced by stainless steel material, has high performance and long service life.Item Type:GPSSpeedometerMaterial: ABS+Stainless SteelVoltage: 9-30VDCCumulative Total Mileage:0-999999 MileWaterproof and Dustproof Rating:IP67Usage: Car/Truck/Ship .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Pointer Tachometer1 x Manual1 xGPS Antenna