Arpenkin HUD Head Up Display Car W02 OBD2 Vehicle with Speeding (MPH/KMH) Rotation Speed and Fuel Consumption Indicator Projected IMPORTANT NOTICE: It only can be used in America and Europe cars after 2004 year, Asia cars after 2007 year.Compatible with OBDII, EOBD system and OND2 agreement cars,not compatible with truck. HUD can not work very well in Direct and Strong Sunshine Conditions. KMH and MPH switch freely, Normal display mode, high-speed display mode, automatically display mode are available Auto power on and off with vehicle startup and shutdown to protect the vehicle's battery, power on or off manually is also available Engine speed switching alarm, remind you to shift timely and save fuel consumption;Overspeed alarm mode at single-stage and four-stage are available, keep you safe better; Please Read: Other Sellers are selling fake"Arpenkin".We never authorize them to sell our"Arpenkin"products."Arpenkin"ONLY Sold by "Road Guardian". We Received Many Customer Complaints Against Other Sellers for Poor Quality.