!!!Note: This product does not contain batteries, so you need to equip yourself with three 'AAA' batteries. Specification: Manufacture Country:China Alarm prompt: sound + light color Shell material: ABS Product name: Alcohol tester Current: 120mA Configure the battery: 3 Battery # 7 (AAA 1.5V) Not included,need to bring your own Voltage: 4.5V Use the temperature range: -5~45 Keep the temperature range: -20~50 Test method: Semiconductor gas sensor Range of alcohol concentration: 0-200mg/100mL Measuring object: Alcohol concentration in the exhaled breath. Product size: about 108.00x66.00x23.10mm Product size: 4.25x2.6x0.91inch Features : 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 compatible with traces of overnight consumption. 4.Clear Digital Display: Features a digital backlit LCD screen that shows clear results regardless of day or night compatible with easy reading. 5.Compact and Portable: Designed to be handheld and lightweight, this alcohol detector is perfect compatible with self-testing and on-the-go use. Package includes: 1* Alcohol tester NOTE: *Images on this page are compatible with 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.