Semiconductor Sensor: This breathalyzer with sensitive semiconductoroxide sensor, can accurately display your level of the alcohol content in your body within seconds and provide you test result.Single Button Operation: The Breathalyzer is extremely easy to use. Just insert the two 1.5V AAA batteries(Not included), turn on your breathalyzer and start testing.LCD Display: 1.5 inch LCD screen, which is designed with red and green double color backlight, easy to read. In addition, it has a battery level indicator.Portable: The alcohol analyzer with mini size, it& 039;s small and easily fits in a purse or pocket, or placed in a car, perfect for you and your family to make an alcohol testing.5 Mouthpieces: Comes with 5 extra mouthpieces. The mouthpieces can be cleaned and recycled. It will be much easier for your family or friend to test.Specification:Material: ABSColor: BlackSize(LxWxH): About 110x61x24mm/4.33x2.4x0.94inchSensor: Semiconductor oxide sensorScreen: 1.5 inch LCD, red and green double color backlightPower supply: 2pcs x 1.5V AAA battery(Not included)Warm-up time:30sResponse time: 3-5sShortest sampling time: 3sMeasuring range: 00-200mg/100mL 0.000-0.909mg/L 0.00-2.00BACAccuracy: Alcohol concentration 50mg/100mL, maximum error 10mg/100mL; Alcohol concentration>50mg/100mL, the maximum error is 20%Sensitivity: 1mg/100mLAlarm mode: Red and green backlight indication and soundOperating temperature: -5-50Package includes:1pc x Alcohol Tester5pcs x Mouthpieces1pc x User ManualNote:1. Due to the light and screen difference, the item& 039;s color may be slightly different from the pictures.2. Please allow 1-2 cm differences due to manual measurement.