Welcome to our store! 1. Built-in semiconductor sensor accurately displays BAC levels. 2. High accuracy provides precise readings with an easy-to-read digital LCD display. 3. 15-second warm-up time, supports automatic alarm, fast and sensitive response. 4. Pocket-sized breathalyzer, lightweight and space-saving, easy to maintain and carry. 5. Energy-saving, automatically powers off 5 seconds after testing. Specifications: Item Type: Breathalyzer Material: ABS Size: Approx. 12 x 4.5 x 1.8 cm/4.7 x 1.8 x 0.7 inches Range: 0.00%–0.19% BAC (0.0–0.19 g/L) Accuracy: -0.01%-0.02% To 0.05%BAC Power Supply: 2 x AAA 1.5V alkaline batteries (not included) Warm-up Time: 15 seconds Response Time: <5s Operating Temperature: 5℃-40℃ Package Includes: 1 x Breathalyzer 10 x Mouthpieces 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 strive to provide the best after-sales service.