Check Product Description And Warranty Details Please! It Will Help You To Resove Some Problems.Item Must Be Charging While Navigating?? For The Battery Can't Last Long ??About 1 Hours. Go To Our Website If You Need More Maps</br>Turn By Turn Navigation Operation System : Professional Website For the GPS Problems Solutions and Map update Specifically.</br>Do Check The Email Our Service Sent You If You Hope The GPS woks Fine .7"creen Present the details Clear .Please Contact Us For Any ReasonWe Will Do The Replacement Or Refund As Your Demand</br>Easy To Navigate The System Can Calculate A Best Route Afer Setting The Destination And The USA Maps Preloaded Hign Functional Muiltmedia Player . Support a lot of format .</br>Please Do Not Use USB cable Connect With CP Charge Your Gps As It Can Not Give Enough Power .Spoken Turn By Turn DirectionsDo Not Speak Street Name . Friendly Warning When Your Are Speeding Or When a Traffic Camera Is Coming.</br></br>Product Description</br></br>IMPORTANT:<br>NO NEED TO RETURN IT TO AMAZON IF YOU DON'T LIKE IT .WE PROVIDE 2 MONTHS 100% REFUND . <br>DO CHECK THE EMAIL OUR SERVICE SENT YOU IF YOU HOPE THE GPS WORKS WELL <br>we are manufacturer and have our own brand . we provide return refund and replacement service at least one year since you purchased from us (for details please check warranty detail) so we please you contact with us if you have any questions and requests <br><br> There are two -tier screen protective film on this GPS ?? if you think the screen is not bright enough ??remove the second one please<br><br>Please change another charger to try charge the GPS if you found it can not be charged or turned on <br><br>.YOU NEED TO GO OUTSIDE TO GET SATELLITE SIGNAL FIRST AND GO TO OUR WEBSITE TO CHECK COMMON QUESTIONS ??FAQ??IF IT IS YOUR FIRST TIME USING A GPS .<br><br> 1.Operation system?? Microsoft Windows CE 6.0<br> 2.7.0 inch TFT ??resolution: 800x480 pixels<br> 3.Built-in Hi-Fi sp