Welcome to our store! Accurate Readings: Built-in semiconductor sensor accurately displays BAC levels. High Precision: Provides precise measurement results with a digital LCD display for easy reading. Fast and Responsive: 15-second warm-up time with automatic alarm support for quick and sensitive response. Portable Design: Pocket-sized breathalyzer is lightweight and space-saving, making it easy to maintain and carry. Energy Efficient: Automatically powers off 5 seconds after the test is completed. Item Type: Breathalyzer Material: ABS Size: Approx. 12 x 4.5 x 1.8 cm/4.7 x 1.8 x 0.7 in Range: 0.00 %–0.19 % BAC (0.0–0.19 g/L) Accuracy: -0.01%-0.02% To 0.05%BAC Power Supply: 2pcs AAA 1.5V Alkaline Batteries (Not Included) Warm-up Time: 15 Seconds Response Time: <5s Working Temperature: 5℃-40℃ Package Includes: 1 x Breathalyzer 10 x Blow Tubes 1 x Cloth Bag 1 x Manual Customer satisfaction is our top priority. If you encounter any issues with your product upon receipt, such as damage or incorrect quantity, please contact us immediately. We are committed to providing you with the best after-sales service.