Fast and Accurate: The breathalyzer is powered by a professional-grade fuel cell sensor and utilizes advanced technology for reliable blood alcohol concentration (BAC) readings. It delivers accurate results and is capable of detecting alcohol traces with precision up to three decimal places. Auto Alarm: One-touch operation allows quick activation and testing within seconds. An audible alarm sounds automatically if the BAC level exceeds the preset threshold. LCD Display: This portable breathalyzer features an easy-to-read digital display. Press and hold the power button for 2 seconds to start, wait 10 seconds for warm-up, then blow steadily for 5 seconds. Results appear on the LCD screen within 3 seconds and remain visible for 10 seconds. Energy Efficient: Features automatic shut-off after 20 seconds of inactivity to conserve battery life. Powered by two AAA batteries (not included). Exquisite Design: Compact and lightweight construction makes it convenient to carry. Easily check your alcohol levels anytime to determine fitness for driving. A practical and portable device for personal use at home or on the go. Fits easily into a pocket.