sensitivity direct thermal alcohol sensor: This device uses a sensitivity direct thermal alcohol sensor to deliver accurate and reliable results, providing peace of mind for users. LCD DISPLAY: The LCD display provides clear readings of alcohol measurements, allowing you to monitor your level at a glance. RECHARGEABLE BATTERY: Built in rechargeable polymer lithium battery enables multiple tests on a single charge, offering convenience and sustainability. QUICK CHECK MODE: Quick check and automatic detection modes provide fast and efficient alcohol measurement in just seconds, ideal for on the go use. Use scenario 1: Before driving or operating machinery, to assess fitness to engage in safety critical activities. Use scenario 2: At social events or gatherings to monitor alcohol levels and make informed decisions. Use scenario 3: While traveling or working outdoors, when quick results are needed without frequent recharging or outlets.