!!!Note: This product does not contain batteries, so you need to equip yourself with three ''AAA'' batteries.Specification:Manufacture Country:ChinaAlarm prompt: sound + light colorShell material: ABSProduct name: Alcohol testerCurrent: 120mAConfigure the battery: 3 Battery # 7 (AAA 1.5V) Not included,need to bring your ownVoltage: 4.5VUse the temperature range: -5~45Keep the temperature range: -20~50Test method: Semiconductor gas sensorRange of alcohol concentration: 0-200mg/100mLMeasuring object: Alcohol concentration in the exhaled breath.Product size: about 108.00x66.00x23.10mmProduct size: 4.25x2.6x0.91inchFeatures :1.Advanced Sensor Technology: Equipped with a new generation high-precision intelligent sensor, this alcohol breathalyzer provides more accurate detection results.2.Enhanced Purification Process: Utilizes a dual filtering algorithm with a built-in evolution chamber to effectively remove impurities, leaving only alcohol.3.Rapid Response Time: This portable breath alcohol tester delivers quick results, enabling precise detection even for traces of overnight consumption.4.Clear Digital Display: Features a digital backlit LCD screen that shows clear results regardless of day or night for easy reading.5.Compact and Portable: Designed to be handheld and lightweight, this alcohol detector is perfect for self-testing and on-the-go use.Package includes:1* Alcohol tester NOTE:*Images on this page are for illustration only and due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!*Please allow 1-3cm measuring deviation due to manual measurement.