1High Accuracy Breath Test: This digital high accuracy alcohol tester utilizes a semiconductor gas sensor to provide precise and reliable results. 2Fast And Portable: With a quick breath time of 10 seconds, this alcohol detector is compact and easy to carry, making it convenient for on the go testing. 3Rechargeable Battery: This alcohol tester comes with a built in lithium battery that can be easily charged, ensuring continuous usage without the need for frequent battery replacements. 4Semiconductor Gas Sensor Technology: The advanced semiconductor gas sensor technology used in tester ensures accurate measurement of breath alcohol content, giving you peace of mind. 5Rapid Preheating And Testing: With a short preheating time of only 15 seconds, electric digital alcohol tester allows for quick and accurate testing.