Feature: 1. An instrument for analyzing the concentration of alcohol in the blood anytime, anywhere. 2. Non‑contact use, no need to accompany the breathing port, more convenient to use. 3. The breath alcohol tester uses nano semiconductor alcohol sensors to quickly and accurately detect the breath of alcohol. 4. The test value is directly displayed on the LCD, and the reading is convenient and simple. 5. Breathalyzer can alarm by sound and light, and automatically shut down: about 1 minute. Specification: ItemType: Breathalyzer Material: ABS Input Voltage: DC 3V Heat Up: 10 Seconds Response: ≤ 5 Seconds Recovery: ≤ 10 Seconds Test Range: 0.00 - 0.20% BAC or 0.0 - 1.9 g/L Accuracy: 0.01% Bad alarm point (0.05%BAC) Alarm Range: ≥ 0.05%BAC (0.5g/L), sound and light alarm Automatic Shutdown: About 1 minute Adaptable Battery Model: Battery Type: Alkaline battery Battery Model: 2 x AAA batteries(shipped without batteries). Package List: 1 x Breathalyzer 1 x Lanyard1 x Storage Box1 x Manual