Drivaid breathalyzer, digital police-precise breathalyzer with semiconductor sensor,

【ONE TOUCH OPERATION】 The breathalyzers are extremely easy to use. Simply insert the three LR03 AAA batteries, turn on your breathalyzer, and start testing. You can easily change the units of measure and set custom BAC thresholds for tests.
【PERFECT LED INDICATOR】 With blue LED indicator flickering, LED screen shows it is in low battery. It becomes much easier to see at night.
【FIVE MOUTHPIECES TO DIVIDE】 Breath alcohol meter comes with 20 pieces of mouthpieces placed on the back of the device, and the mouthpieces can be cleaned and recycled.