Based on highly advanced technology， this i3 4" LCD HUD Head-up Display System with OBDData Line is characterized by high cost performance compared with similar products. Adopting the latest compatibility and stability， it could well match up the general operation of your car. Also， it installs quickly requiring no additional technique. As to its performance， this display system supports auto timer， shift warning， over-speed remind， voice prompt and time display etc. Designed into 4-inch size， it is portable and easy for reading. In a word， high quality and meticulous construction will make you more comfortable and assured. Pick it out!                                    Features             New high brightness screen， bright colors， image is clear and fine<br> 4-inch LCD display， portable and easy for drivers to read data<br> HUD can display many parameters at the same time as follows: vehicle speed(KM/H) / rotational speed(RPM) / water temperature/battery voltage/idle speed and instantaneous fuel consumption/clock<br> Excellent compatibility and stability， could well cooperate with your car<br> To ensure highest picture quality possible<br> Support auto timer， shift warning， over-speed remind， and voice prompt etc.<br> Easy and quick installation even for the green hand   <br>                                                            Specifications             Color     Black    <br> Power     0.4W    <br> Working Voltage     9V~16V DC    <br> Working Temperature     -40▲C -+80▲C     <br> Storage Temperature     -40▲C -+80▲C    <br> Screen Size     4 Inch    <br> Material     ABS    <br> Weight     1.94oz / 55g    <br> Dimensions     (4.13 x 2.44 x 0.59)" / (10.5 x 6.2 x 1.5)cm (L x W x H)     <br>                                                             Package Includes            1 x HUD Screen             <br>1 x OBD Data Line               <br>1 x Reflection Film         <br>1 x Non-slip Mat          <br>1 x English User Manual <br>