Non-Contact Breathalyzer: This breathalyzer can measure the concentration of alcohol in the breath with just one puff, which is healthier than the mouth type. 2 measurement units of %BAC and g/L can be selected, and the measurement results are professional specifications. LCD Display: The high-precision alcohol detector has an LED display for easy reading of the data even at night. If there is an indicator light, the test results can be seen at a glance. High accuracy: Our breathalyzers use sensitive semiconductor sensors. The test range is from 0.00 to 0.95 mg/1 BrAC (alcohol concentration in breath) and the test accuracy is 0.05 mg/1 BrAC. Small and light: powered by 2 AAA alkaline batteries ( not included in the delivery). Small and lightweight, it easily fits in a purse or pocket. You deserve a portable breathalyzer. Essentials for Driving: This alcohol breathalyzer is a driver's must-have to keep you safe while driving. The perfect gift for Father's Day, friends, colleagues, friends!