Description brand new and high quality Features: Please disconnect the HUD if you donfor t drive for more than a week.Generally speaking car batterys standby for time is 1 month,we kindly suggest you to unplug the OBD device when the car is not used for a long for time due to different vehicle conditions. Main Function: 1.Multifunction: Speed, Water temperature, Voltage 2.Engine icon, Water temperature icon 3.Voltage icon, Fatigue driving icon 4.Light sensor:HUD can automatically adjust the brightness according to the environment 5.Speed unit: MPH- mile,for KM/H- kilometer specification: Color:BLACK Material:ABS Size: 8.6*3.7*1.6cm Quantity:1PC NOTE: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1x for Head Up Display