Welcome to our store! 1. A simple method to analyze blood alcohol concentration anytime and anywhere. 2. Helps prevent drunk driving and travel safely. 3. Fast response and restart, easy to use. 4. Small size with keyring, light and easy to carry. 5. Digital alcohol tester with sound signal. LCD screen gives you clearer view. This digital alcohol tester helps prevent drunk driving and travel safely. Fast response and restart, easy to use. Small size with keyring, light and easy to carry. Features: - A simple method to analyze blood alcohol concentration anytime and anywhere. - Helps prevent drunk driving and travel safely. - Fast response and restart, easy to use. - Small size with keyring, light and easy to carry. - Digital alcohol tester with sound signal. LCD screen gives you clearer view. - Environmentally friendly and healthy. Blowing design with 10 pcs/20 pcs/50 pcs mouthpieces (optional) for multiple users. Specifications: - Condition: 100% brand new - Product Type: Alcohol Tester - Color: Black - Mouthpiece Quantity: 10 pcs, 20 pcs, 50 pcs (optional) - Battery Type: 2 * 1.5V AAA batteries (not included) - Range: 0.00 - 0.19% BAC, (0.0-1.9 g/l) - Warm-up Time: Within 10s - Response Time: Within 5s - Operating Temperature: 5℃ ~ 40℃ - Auto Shut-off: About 1 minute - Size: About 112 * 68 * 22 mm / 4.4 * 2.7 * 0.9 in - Package Weight: About 63-111 g Package List: - 1 * Alcohol Tester (batteries not included, no background lighting) - 50 * Mouthpieces - 1 * Manual Customers are our top priority. If you find any issues 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.