Features: Advanced Technology Alarm function: when the alcohol content exceeds the standards, the red light in the upper left corner will light up. Compact and Portable Designed to be small and easy to carry, this device offer convenient operation for quick and reliable results. Suitable for All Users Perfect for individuals who need to monitor their alcohol consumption regularly, such as professional driver or safety conscious individuals. Versatile Usage Scenarios This breathalyzer is perfect for various situations like social gatherings, parties, or Personals use, providing reliable measurements. Reliable and Accurate Equipped with a high quality sensors, this breathalyzer delivers precise and dependable measurement results, giving users peace of mind. Specifications: Material:ABS Powered by:3pcs AAA Battery(not included) Measurement ranges: 0-200mg/100ml Working environment: -5-45 ℃ Size:Approx.104mm/4.09''x53mm/2.08''x25mm/0.98'' Package Includes: 1x Alcohol Breath Tester note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.