Compact and Portable: Made of sturdy ABS, this breathalyzer is compact and simple, allowing you to carry it with you wherever you go. Clear LED Display: The LED display screen is clear and easy to read and understand, providing accurate test results. Safe and Healthy: It is safer and healthier to blow air into this drunk driving tester without contact, suitable for testing even after a night of drinking. Emergency: Can be placed on the door to sense problems and make an emergency sound, ensuring safety for you and your loved ones. Professional Grade: This breathalyzer is a professional grade device that provides accurate and reliable results, making it a must-have for responsible drivers.