Features: Functions:Speed, clock, driving direction, driving distance, driving-time, number of satellites, 100km acceleration-time, driving direction angle, altitudes. Speed alarm, fatigue driving reminder function, improve driving safety. Low-power chip, non-destructive standby completely solves the problem of high power consumption! Intelligent switch machine, start and close with the-car. Small body, clear and natural in any corner, without blocking any line of sight. A variety of displays, one-key switching. Zero-consumption of USB power supply, complete power off when the-car is turned off. Specifications: Material:ABS+PC Size: Approx.16.8x4.3cm/6.61x1.69inch Color:Black Model: G3 Screen Type: LED Package Includes: 1x Host 1x USB Cable 1x Anti-skid Pad 1x Manual note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.