- Voice alerts and LED color display: The device provides clear feedback with sound alerts and LED indicators, green for standard levels (0.00-0.019), yellow for caution (0.020-0.079), and red for drunken (0.08). - Quality material: Made from PP, this Test Tool is built to last and is suitable for home or professional use. - Professional accuracy: This Personal Breath Alyzer Tester delivers professional-grade accuracy in BAC results, with a compact size of 9.8x4.7x2.31 cm / 3.86x1.85x0.9 inch. - Compact and portable: Weighing only about 70 g, this Personal Breath Alyzer Tester is lightweight and easy to carry in your car, bag, or pocket, suitable for use at parties, banquets, or social gatherings to ensure secure driving after drinking. - Use scenarios: Use before leaving a party or banquet to confirm safe driving; use on business trips or social events to check impairment; keep in car or bag for on-the-go checks after drinking.