Welcome to our store! 1、Highly sensitive wine sensor, the detection result is accurate and fast, without waiting too long. 2、With compact shape, does not take up much space, light weight, easy to carry and easy to use. 3、Low power consumption, it will automatically shut down if it is not used for a long time to avoid wasting power. 4、Backlit LCD screen, 3 types of indicator light indicate the test result, green means non-drinkable state, orange means drinking, red means drunk. 5、Dust-proof design, sliding upwards to close the air intake, can be used for a long time. Item Type: Alcohol Tester Material: ABS Color: Black Size: Approx. 102x28x20 mm/4x1.1x0.8 in (please allow 1-2mm difference due to manual measurement.) Wine Sensor Type: Semiconductor Response Time: ≤ 20s Measuring Range: 0-19% BAC 0-1.9 g/l Indication Error: ± 0.01% BAC Operating Temperature Range: - 5-45 ℃ Blowing Continuity Test: 5 seconds (flow rate: ≥ 10L/min) Built-in Polymer Lithium Battery: Battery Capacity: 200MAH Display: LCD Screen Alarm Mode: Buzzer Indicator Light Meaning: Green: Non-drinkable state Orange: Drinking state Red: Drunk state Charging Mode: DC 5V 1A, Micro 5p interface With steps: 1. Slide down the slider to display the WARM UP logo and blow for 10 seconds 2. Display the BLOW sign and start blowing 3. Display the RESULY sign to read the value 4. Display OFF sign, turn off with 2 beeps 1 x Breathalyzer 1 x Data Cable 1 x Manual 1 x Storage Bag Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!