["2020 newest breath alcohol tester professional Breathalyzer With LCD Screen Digital Alcohol Detector Powered By USB Charger\n\nFeatures:\n1.The newly upgraded portable alcohol tester uses advanced aviation-grade semiconductor materials and a new C+ language calculation method to make the test results more accurate and the test results of 2 units cleare\n2.Lower than warning value: Make a \"di\" sound and the light will turn green.\n3.Between warning value and dangerous value: Make sound as \"di di\" and the light will turn yellow.\n4.Higher than dangerous value: Make sound as \"di di di...\" for about 10 seconds. The light will turn red\n5.This alcohol tester is suitable for family gatherings, dating and friends gatherings. \n\nSpecifications:\nColour: Black\n\n\n\nNote:\nThe product needs to be pressed for a long for time to work normally. If it is pressed briefly for one second, it will not boot normally, but it is normal, please don'for t worry.\n\nPackage included:\n1*Box\n1*Instruction\n1*USB data cable\n1*Alcohol Tester"]