Vjoycar Car HUD Head Up Display 5" OBD2 Windshield Gla Speed Projector Gauge Auto Scanner Security Alarm Overspeed Water Temp Product Features: 1: Compatible with all cars & trucks with OBD2 or EUOBD interface2: 5.5 inch Screen display3: Updated Software , More Cars will be compatible4: Display Automatically: speed, RPM, clock, Coolant Temperature, Voltage, Oil Consumption, mileage measurement...5. Different Alarms: shift reminder, fatigued driver reminder, low voltage alarm, high temperature alarm, speed alarm, engine fault alarm, fault code elimination, distance unit: Kilometer/mile; Speed Unit: KM/H & MPH6: Auto power on and off7: Automatic and manual brightne adjustment mode Product Specification: Environment temperature - 35C--+80CBarometric pre:86-106KPaRelative humidity:10%-95%Environment voice:<=60dBAlarm of sound level:>=30dB(A)Work voltage:9V~18VSize of product:12.3*7.3*1.2(cm)Display Size: 5.5 inch Packing: 1X Main Host1X OBD Cable (1.8M)1X Reflective film1X Anti-slide Pad1X User Manuel Attention:1. OBD2 devices are not compatible with follow vehicles: 2.OBD2 devices are not compatible withOil and electricity mixing, diesel powered car, Pick up, SUV, ORV. 3. Below special cars not support: About VJOYCar Factory: We have around 200 workers, long-team cooperate with famous Auto Companies from Germany and Japanese, International leading automotive technology, Excellent quality control, all products have CE certification ! If you are not satisfied the item, or need any aistance when usage, please feel free to contact with us, we will do all the best. If you are satisfied with our products and service, please kindly leave us 5 stars feedback. Thanks a lot !