Welcome to our store! Precise Chip: Featuring a high-accuracy chip, this breathalyzer has a smart sensor for more accurate and reliable testing. Smart Testing: Integrated design, slide up the baffle to close and prevent dust, slide down the baffle for testing. Better Design: Powered by a battery, the breath tester allows for safe and easy touch-free detection with a simple breath. Clear Display: The LED digital display clearly shows data and also has a 3-color indicator for a quick overview. Easy to Carry: Lightweight and compact, making it easy to carry and use outdoors. Item Type: Breathalyzer Sensor Type: Semiconductor Type Charging Input: 5V1A Response Time: ≤20s Measuring Range: 0-0.19%BAC, 0-0.95mg/L Measurement Error: ±0.01%BAC Operating Temperature Range: -5℃~45℃ Storage Temperature Range: -20℃~50℃ Blowing Continuity Test: 5S ≥10L/min. Battery Type: 1 x 02030 polymer lithium battery 200mAH, comes with built-in battery. Working Current: 150mA Charging Method: DC 5V 1A Package Includes: 1 x Breathalyzer 1 x Data Cable 1 x Lanyard 1 x User Manual Customers are our top priority. If you find any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.