Item Type: BreathalyzerMaterial: ABSColor: BlackSize: Approx. 102x28x20mm/4x1.1x0.8in (Please allow 1?2mm difference due to manual measurement.)Type of Wine Sensors: HemiconductorResponse Time: 20sMeasuring Range: 0-19% BAC 0-1.9g/lIndication error: 0.01% BACOperating Temperature Range: - 5-45Blowing Continuity Test: 5 seconds (flow rate: 10L / min)Built in Polymer Lithium Battery: Battery Capacity: 200MAHDisplay: LCD displayAlarm Mode: BuzzerMeaning of Indicator Light: Green: Undrinkable stateOrange: Drinking state Red: Drunk stateCharging Mode: DC 5V 1A, Micro 5p interfaceUsing Steps:1. Slide down the switch to display the WARM UP logo and blow for 10 seconds2. Display the BLOW sign and start blowing3. Display the RESULY sign to read the value4. Display OFF sign, shut down with 2 beeps1High?sensitivity wine sensor, the detection result is accurate and fast, without waiting too long. 2With compact shape, not taking up much space, light weight, easy to carry and easy to use. 3Low power consumption, it will automatically shut down if not used for a long time to avoid wasting power. 4Backlit LCD screen, 3 kinds of indicator light indicates the test result, green means undrinkable state, orange means drinking, red means drunk. 5Dust?proof design, sliding upward to close the air inlet, can be used for a long time. 1 x Breathalyzer 1 x Data Cable 1 x Manual 1 x Storage Bag