JASTEK Breathalyzer, Personal breathalyzer, Portable Digital Alcohol Tester with 5 Mouthpieces for Personal Use -Black

ALCOHOL TESTER WITH SMART ALARM FUNCTION & ENERGY-SAVED DESIGN: when the test result is higher than 0.05% BAC / 0.5 ‰ BAC, the red light of digital breathalyzer flashes and a continuous drop sound is emitted to remind the user. Powered by 3AAA alkaline batteries (not included), it will auto power-off to save power after finishing the test for 5 seconds. Moreover, designed with low voltage indication for this breathalyzer