Features:Real-time warning alarm: Once detecting the driver with fatigue or distraction, the device will send an alarm signal to alert the driver.Intelligent detection technology: Through identification technology and pupil detection, it is possible to judge whether the driver is tired or unfocused when analyzing changes in pupil characteristics.Advanced face recognition: Suitable for all skin types, even drivers with glasses or sunglasses.Detection distance and time: 45-65 cm (5 cm) detection range and 1~2 seconds after closing the eyes.Main function: It is able to send reminders and alarms to the driver in real time to guarantee the safety of the driver's life and property.Specification:Condition: Brand NewMaterial: ABSColor: BlackDetection technology: With identification technology and pupil detectionAdvanced face recognition: For all skin types, even drivers with glasses or sunglasses.Detection distance: 45-65 cm (5 cm)Observation angle: 60 degreesWarning time: 1~2 seconds after closing your eyesFunction: Real-time fatigue warning and alarmInterface: USBCar charger input: DC 12 V / 40 VCar charger output: 5 V,2.5AWorking voltage: 5 VCurrent: 320 mAMinimum operating voltage, current: 4.75 V, 240 mAMaximum voltage: current: 5.25 V, 500 mATemperature: -20 C ~ 60 CStorage temperature: -20C ~ 80C Package List:1 * Fatigue Driving Alarm Device1 * Bracket1 * Car Charger1 * User Manual.