Output Frequency:Output Frequency: 11v~18vdc(12vdc/200ma)Wire Or Wireless:WiredOrigin:Mainland Origin:Cn(origin)Product Name:Gps SpeedometerSold In:Sell_by_pieceCar Up Display Speed Rpm Mph Hud:Wide Use For All The Cars Up Display:Best And TimelyHud Headup Display For Car Smart Ga:Hud Headup Display For Car Smart Gauge Hud Smart Digital Met: Up DisplayCar Smart Gauge Digital Speed Gauge:Smart Digital HeadupRead And Clear Car Engine Fault Code:Speed Alarm HudVoltage Alarm Hud:Solar Up DisplayCoolant Temperature Alarm Hud:Gps Hud SolarHud -up Display:Automatic AdjustmentGps Up Display:Uhd -up DisplayKm/h Mph Optional: Up Display GpsSpeed Compensation Setting: InductionAfter Long Parking:Fatigue Driving AlarmTime Display: Up Display WirelessUsb + Solar Power: Up Display WirelessSpeed/time/temperature/altitude Display:Driving Alarm / Overspeed AlarmUsb Charging + Solar Power Charging:Gps Positioning System