Feature: 1. Compact and portable design with no blowpipe to help prevent contamination; non-contact operation helps maintain hygiene 2. Fast testing and results: delivers results within 20 seconds (10 seconds preheating, 35 seconds for breath sample, and response within 5 seconds) 3. LED display provides clear readings with dual unit values for easy interpretation 4. Three-color LED indicator (red, orange, green) shows alcohol concentration levels Product Name: High Sensitivity Alcohol Tester Accuracy: 0.005% BAC Response Time: Less than 5 seconds Warm-up Time: 10 seconds Power Supply: USB charging port Test Range: 0.0000.199% BAC Blow Duration: 10 seconds (typically 35 seconds) Material: Plastic Color: Black Package Contents: 1 x Tester Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement error allowance is +/- 13 cm.