Feature: 1. Display Information: Display speed, driving direction, time, overspeed alarm, fatigue driving alarm. Automatic switching time display when the vehicle speed is 0. 2. High-definition LED: Automatic photosensitive adjustment, the heads up display built-in light sensing system, which can automatically adjust the screen brightness according to the light brightness of the current environment, bringing a comfortable visual experience. 3. Compact and Mini Size: No matter where it is placed, it is clear and natural, and does not block any sight. Easy to install, with the 360 degree rotating suction cup bracket. 4. Accurate Speed Display: Add the speed calibration function, which can be adjusted to be consistent with the display of the car dashboard(GPS speed is based on the satellite signal! It is very accurate in nature, no need to adjust normally). 5. Safe Driving: Overspeed alarm can be set, continuous driving for 8 hours fatigue driving reminder. Specification: Features: Display Information: Display speed, driving direction, time, overspeed alarm, fatigue driving alarm. Automatic switching time display when the vehicle speed is 0. High-definition LED: Automatic photosensitive adjustment, the heads up display built-in light sensing system, which can automatically adjust the screen brightness according to the light brightness of the current environment, bringing a comfortable visual experience. Compact and Mini Size: No matter where it is placed, it is clear and natural, and does not block any sight. Easy to install, with the 360 degree rotating suction cup bracket. Accurate Speed Display: Add the speed calibration function, which can be adjusted to be consistent with the display of the car dashboard(GPS speed is based on the satellite signal! It is very accurate in nature, no need to adjust normally). Safe Driving: Overspeed alarm can be set, continuous driving for 8 hours fatigue driving reminder. Specifications: Item Name: Heads up Display Material: ABS Color: Black, Green Value Display Size: 2.03*2.03*0.55inch Package Size: 10*7.5*7.5cm Package Weight: 140g Package List: 1* Heads up Display 1* USB Cable 1* Suction Cup Bracket 1* Double-sided Adhesive Tape 1* User Manual Package List: 1* Heads up Display 1* USB Cable 1* Suction Cup Bracket 1* Double-sided Adhesive Tape 1* User Manual