Welcome to our store! 1, Touchless Design: Touchless breath detection is safe and more hygienic, allowing multiple people to use without extra nozzle replacement. 2、High Accuracy: The alcohol tester uses high accuracy and sensitive semiconductor alcohol sensor, generating accurate results. 3, USB Rechargeable: Built-in 140mAh polymer battery, can be used 300 times, very durable and USB rechargeable. 4, Portable: Breath alcohol tester is very small and portable, can be easily carried in your wallet or pocket, convenient and practical. 5、Application: Breathalyzer is suitable for weddings, parties, celebrations or other social activities to ensure safe driving after drinking. Item Type: Alcohol Tester Material: ABS Color: Black Function: Breath Test Built-in Battery: Polymer Lithium Ion Battery Capacity: 140mAh Detection Range: 0.00-0.19% BAC (0-1.9G/L) Detection Error: ±0.005% BAC Detection Unit: mg/L (BrAC); Mg/ml (BAC) 1 x Alcohol Tester 1 x USB Cable 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. Ensure safe driving with this portable and accurate breath alcohol tester!