Professional accuracy: This Breathalyzer delivers professionalgrade BAC accuracy in a compact unit measuring 9.8 x 4.7 x 2.31 cm (3.86 x 1.85 x 0.9 in). Voice alerts and LED color display: Provides clear feedback with sound alerts and LED indicators. Green for standard levels (0.000.019), yellow for caution (0.0200.079), and red for 0.08. Compact and portable: Weighing about 70 g, this 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. Quality material: Made from PP, this test tool is built to last, ideal for home or professional use. Use scenarios: In the car after a night out, to verify whether it is safe to drive. At social events such as parties or banquets, to assess impairment before driving or arranging alternatives. While traveling or on business trips, to confirm BAC before returning to the road.