LCD DISPLAY: This GPS navigation uses a color high-definition LCD display, and at the same time automatically adjusts the screen brightness according to the light intensity, data reading is simple and convenient. PRECISION: With the help of high-precision satellite altimeter and 32-channel high-performance GPS chip to provide altitude data, it can accu ely display speed, altitude, latitude and longitude data. INTLLIGENT FUNCTION: It also has functions of speeding alarm, fatigue driving alarm and testing the vehicle's roll angle. It is a fully functional intelligent product. Carbon fiber design, and use high-quality materials to achieve maximum durability. QUALITY ASSURANCE: We are professional sellers. Our product has passed quality tests before leaving the factory. We promise to provide you with brand new high-quality products and fast transportation services. If you are not satisfied with our products, please contact us, we will provide you with perfect after-sales service until you are satisfied, so please rest assured to buy. Specification: Accu e satellite speed measurement: Yes Altitude measurement display function: Yes Longitude and latitude measurement display function: Yes display: Yes Satellite time display: Yes Overspeed alarm: Yes Fatigue driving alarm: 4 hours continuous driving will alarm Test vehicle roll Angle: Yes Vehicle tilt Angle test: Yes