Car Fatigue Warning Alarm Device Head Up Driving Safe System Features: Determine whether the driver is fatigued or inattentive. Specifications: Charger input: DC 12V/24V Charger output: 5V, 1.5A Minimum working voltage, current: 4.75V, 240mA Maximum working voltage, current: 5.25V, 500mA Working voltage, current: 5V, 320mA Function: Alerts promptly when the driver is fatigued Alerts when driving distracted (looking around) Alarm response time: 1-2 seconds after closing your eyes Detection angle: 60 degrees Interface: USB Working temperature: -20& 8451;~60& 8451; Storage temperature: -20& 8451;~80& 8451; Detection distance: 45-65 cm (±5cm) Languages: Chinese, English, Russian, Japanese, Korean (multiple languages are available, but only one can be selected) The package: 1*Host 1*Bracket 1*Cigarette lighter 1*Manual Precautions: 2. When wearing sunglasses, the driver can also use this device. When using this device, it is recommended not to wear sunglasses. 3. This product is only for safe driving. There may be false positives or under-reports. Please don't rely solely on it or perform extreme tests. Note: 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture. 2.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order.