Mr Black-05 Portable Alcohol Tester Breathalyzer Unit

Mr Black-05 Portable Alcohol Tester Breathalyzer UnitSmart chip, highly sensitive sensor, more accurate measurement.High-definition display of precise numerical values, it is clear at a glance whether there is alcohol or not.Light and compact, just right to hold in one hand, you can't put it down.Power supply mode: built-in lithium battery, USB power supply