Vktech&reg; S5 5.5 Inch Car OBDII Smart HUD Windscreen Head Up Display Speeding Warning Head Up Display, which is abbreviated to HUD, which is short for Head Up Display, with the meaning of Look-up display device, or look-at-the-front-horizontally display device is designed for preventing accident, which can project important information (e.g. vehicle speed) onto the front windshield at the eye level of the driver The display location and brightness can be adjusted through automatic induction, which can prevent the driver from looking down at the instrument panel and shorten the time of eyes for the blind spot in front This can avoid breaking rules and regulations due to speeding in many speed-limited sections. What's more important, it can enable the driver to read the number instantly without shifting horizon, which is of vital value in reducing traffic accidents caused by absent-mind due to looking down Our multifunctional HUD product is developed based on OBD interface and has good cost-performance ratio. It is designed by adopting the latest integrated circuit with stable performance and has a beautiful and elegant appearance The reflective film may be affixed to the forward position of HUD and stick to the front windshield, ensuring that the information, such as car speed can be projected to the reflective film