Features: Model: P10 - OBD Speedometer With Car Diagnostic Tool, Not Compatible For Some Cars (details as pictures in the bottom show).. Plug and play. Real 2.6" TFT LCD multi color smart display. The first scan will show the vehicle protocol. Add new functions: accelerating competitive mode, brake performance test, can read the entire car data stream information. Rich Contents: vehicle speed, engine RPM, water temperature, voltage, instantaneous fuel consumption, average fuel consumption, driving distance measurement, driving time, low voltage alarm, high water temperature alarm, over speed alarm, engine fault code alarm, eliminate the fault code, freely switch between kilometers & miles. Multi function display mode or simple function display mode can be switched freely to show above content. Supporting Protocol: ISO15765 CAN Bus, ISO14230 KWP2000, ISO 9141-2 Specifications: Environment temperature: -40c- + 80c atmospheric preure 86-106KPa Relative Humidity: 10% -95% environmental noise <= 60dB (A) Alarm sound level: =30dB (A) Working voltage: 9V ~ 16Vdc (12Vdc / 400mA) NOTES: OBD2model can work for OBD2 gasoline vehicles produced after 2004 in USA,and OBD2 gasoline vehicles produced after 2008 in other countries. OBD2 model is not applicable for the following cars: Incompatibility:American models: Dodge, JEEP, IMSEOER, Chrysler and cars manufactured before 2004 in USA Incompatibility:French and Italian cars are not available: Fiat, Maserati, Lamborghini, DS, PEUGEOT , Citroen, Renault, Simca etc. Incompatibility:SomeJapanese cars are not available: Suzuki, Mazda 6, INFINITI (QX50 Q50Q501), Toyota AVANZA in 2013, Lexus (is250, ex250, ES300H), Honda (jazz,CRV) and cars manufactured before 2008. Incompatibility:Korean KIA and some cars of Hyundai (2013 Hyundai Sonata, 2017 KIA Soul PS, etc.) Incompatibility:Hybridand diesel vehicles, pickups, RVs, cars with modified automotivecomputers, Volvo, Switzerland, Chrysler Group, all brand models underFiat Group. Incompatibility:German cars before 2004 For the above cars can not use OBD2 models , please use GPS models. Package Included: 1 x OBD Smart Digital Meter HUD P10 About Y03 HUD: Functions: GPS and Beidou dual chips, the speedometer is very accurate, and the speed is refreshed quickly without any delay. Innovative design, with sunshine hood itself, good review even under sun. Plug & Play, after connect power supply, it will work directly, no need any other operation. Large font, clearly visible both during the day and at night. Speed unit is KMH (not support MPH). Wide application, it can work on all cars, trucks, buses, E-scooters, E-bikes. TheDevice is GPS Digital Speedometer, and speed is collected fromsatellites. So if tested at home or parking lot, perhaps speed can'tdisplay correctly. Please test it on the car outside with good signal. Note: it's speed display ONLY, no other function. Specification: Model: Y03 Screen Size: 2.8 Inch Material: ABS+PC Screen Type: LED Applicable models: Universal for most vehicles Color: Black and Green Package Included: 1 x HUD 1 x Micro USB Cable 1 x Anti-Slip Gel Pad 1 x Manual Attention: 1.This P10 OBD only works with OBD2 cars,Not Fit for the cars as pictures below show: 2.Not fit for cars by oil and electricity mixing, diesel powered cars, Pickups, SUV, ORV. 3.If you're not sure whether it could fit for your car,please contact with us. Do drop