Features 1、GPS OBD2 Dual System: OBD2 only be available for vehicles produced after 2008. GPS MODEL Perfect Suitable for All Vehicle. ( If your car is not compatible with OBD mode, please use GPS mode. Dual System, Change free. OBDll mode is not compatible with hybrid electric vehicle, diesel car, pickup truck, RV, computer modified car. If the speedometer shows only voltage after turning on the power, please switch to GPS mode. 2、Features: OBD+GPS+ Slope meter+Ambient light (blue, red, purple switching)+12 language settings (English, Chinese Simplified, Chinese Traditional, Thai, Japanese, Korean, Russian, Arabic, Malay, Spanish, German, French), making driving safer and easier. 3、Clear Intuitive Display: The tachometer's analog display has a pointer that moves to indicate RPM, so you can visually identify the engine RPM value. With multiple display screens, you can switch to your preferred screen at will. The digital speed readout is easy to see at a glance, so you can concentrate on driving without looking down at the dashboard, avoiding distractions and even accidents. Some can also display various values such as speed, altitude, water temperature, and voltage. 4、Fault Codes Clearing and Acceleration Testing: When the engine warning light in your car's instrumentation comes on, it indicates that something is wrong with the car, but with the P21 speedometer, you can clear the codes yourself without having to spend money to the repair shop. There's also an acceleration test and a brake test so you can get a better idea of your car's performance. 5、Multiple Fault Alarm Functions: OBD mode can perform overspeed alarm, speed alarm, water temperature alarm, voltage alarm, tilt alarm; GPS mode can perform overspeed alarm, low voltage alarm, tilt alarm, etc. The chip with powerful performance and compatibility to make sure dual system, dual‑run memory and dual‑core processor high‑speed operat. Specifications: Item Type: HUD Display Material: ABS+Metal OBD Mode Features: Vehicle speed, water temperature, voltage, fuel consumption, speed clock, single driving time, driving distance (single/cumulative), intake pressure, oil temperature, air-fuel ratio, turbo pressure, altitude, driving direction, throttle valve, intake temperature, transmission temperature, engine load, up-slope angle, left-right tilt angle brake test Alarm: Overspeed alarm Speed alarm Water temperature alarm Voltage alarm Tilt alarm GPS Mode Features: Vehicle Speed Voltage Satellite Time Altitude Altitude Number of Satellites Driving Direction Single Mileage Driving Time Up and Down Slope Angle Left and Right Inclination Acceleration Test Brake Test Alarm: Overspeed alarm Voltage low alarm Tilt alarm Features: OBD+GPS+Slope Meter+Ambient light (blue, red, purple switching)+12 language settings (English, Chinese Simplified, Chinese Traditional, Thai, Japanese, Korean, Russian, Arabic, Malay, Spanish, German, French) + 12 grids Fitment: GPS Mode: Universal for all cars OBD Mode: It is suitable for gasoline vehicles with OBD2 agreement produced in the United States after 2004, and gasoline vehicles with OBD2 agreement produced in other regions after 2008. The Following Common Models Are Not Suitable For OBD2: 1. Incompatible: American models: Not replacement for Dodge Not replacement for JEEP Not replacement for Sail Not replacement for Chrysler and 2004 and earlier models 2. Incompatible: French and Italian models cannot be used eg: Not replacement for Fiat Not replacement for Maserati Not replacement for DS Not replacement for Peugeot Not replacement for Citroen Not replacement for Amilka et al. 3. Incompatible: Japanese models cannot be used Not replacement for Suzuki Not replacement for Mazda 6 Not replacement for Infiniti (QX50 q50 q501) Not replacement for avanza 2013 Not replacement for is250, ex250, ES300H Not replacement for jazz, CRV and cars produced before 2008, etc. 4. Incompatible: Not replacement for Hyundai Sonata 2013 Not replacement for Kia Soul PS 2017, etc. 5. Incompatible: gasoline-electric hybrid and diesel cars, pickups, RVs, cars with modified car computers Not replacement for Chrysler Not replacement for Fiat Package List 1 x HUD Display 1 x OBD Cable 1 x Small Suction Cup Holder 1 x Manual 1 x Double Sided Adhesive