Keep Your Eyes On The Road!<br />At 65 MPH， looking down for one second to check the speedometer means driving blind for 95 feet. Many accidents start during the time a driver glances down and fails to see sudden traffic changes ahead. Now， with this A1 GPS Head Up Display， you never need to look down to check speed while driving. You can also set over-speed warning. When the preset speed limit is exceeded， the icon will flick to remind you of the speed limit.<br /><br /><br /><br /><br /><br /><br />Features:<br />Overspeed alarm， help you avoid the accident<br />Compass， eight directions， avoid driving wrong way<br />Altitude， know the the road condition well<br />Real time show， know the times accurately<br /><br />Parameters:<br />DC 8 - 18V working voltage<br />40mA working current <br />±1 degree compass precision<br />0 - 400KM speed range<br /><br />    Specifications<br />General<br />  Model  : A1                                                  <br />                        Language  : English                                                  <br />                        Color  : Black                                                 <br />Specifications<br />  Data measurements: Vehicle speed                                                 <br />Dimension and Weight<br />  Product weight   : 0.082 kg                                                  <br />                        Package weight   : 0.26 kg                                                  <br />                        Product size (L x W x H)  : 9.5 x 8.3 x 2 cm / 3.73 x 3.26 x 0.79 inches                                                  <br />                        Package size (L x W x H)  : 16.8 x 13 x 4.5 cm / 6.60 x 5.11 x 1.77 inches                                                 <br />Package contents<br />  Package contents: 1 x A1 GPS HUD， 1 x Englishg Manual， 1 x Refletive Film， 1 x Anti-skid Mat， 1 x Charing Cable， 1 x Cigarette Lighter， 1 x Charging Cable                                                 <br /><br /><br /><br />                                                <br />