Features: 1.High?sensitivity wine sensor, the detection result is accurate and fast, without waiting too long. 2.With compact shape, not taking up much space, light weight, easy to carry and easy to use. 3.Low power consumption, it will automatically shut down if not used for a long time to avoid wasting power. 4.Backlit LCD screen, 3 kinds of indicator light indicates the test result, green means undrinkable state, orange means drinking, red means drunk. 5.Dust?proof design, sliding upward to close the air inlet, can be used for a long time. Specification: Item Type: Breathalyzer_x000D_ Material: ABS_x000D_ Color: Black_x000D_ Size: Approx. 102x28x20mm/4x1.1x0.8in (Please allow 1?2mm difference due to manual measurement.)_x000D_ Type of Wine Sensors: Hemiconductor_x000D_ Response Time: 20s_x000D_ Measuring Range: 0-19% BAC 0-1.9g/l_x000D_ Indication error: 0.01% BAC_x000D_ Operating Temperature Range: - 5-45_x000D_ Blowing Continuity Test: 5 seconds (flow rate: 10L / min)_x000D_ Built in Polymer Lithium Battery: Battery Capacity: 200MAH_x000D_ Display: LCD display_x000D_ Alarm Mode: Buzzer_x000D_ Meaning of Indicator Light: _x000D_ Green: Undrinkable state_x000D_ Orange: Drinking state _x000D_ Red: Drunk state_x000D_ Charging Mode: DC 5V 1A, Micro 5p interface_x000D_ Using Steps:_x000D_ 1. Slide down the switch to display the WARM UP logo and blow for 10 seconds_x000D_ 2. Display the BLOW sign and start blowing_x000D_ 3. Display the RESULY sign to read the value_x000D_ 4. Display OFF sign, shut down with 2 beeps PackageList: 1 x Breathalyzer 1 x Data Cable 1 x Manual 1 x Storage Bag Note: Please allow 1?2mm difference due to manual measurement.