I haven't been able to confirm functionality. Please be aware of this. Alcohol Checker Alcohol Detector Alcohol Tester Alcohol Checker Breathalyzer Alcohol Detector LCD Digital Display When the detection result exceeds 0.250 mg/L, the system will emit a beeping alarm, and when the detection result reaches 0.380 mg/L, the system will emit a more rapid beeping alarm, helping you make the right decision when drinking. Portable: This alcohol detector is small in volume, light in weight, and easy to carry. Alcohol checker measurement range 0.000-0.190% BAC / 0.000-0.950 mg / L, digital display, green LCD Easy to use: The alcohol checker is very easy to use. Simply insert two AA alkaline batteries (not included) to start the alcohol tester. It automatically turns off 5 seconds after the measurement is complete, saving energy. Note: (Bag not included) To obtain correct measurement results, use the alcohol tester 20 minutes after drinking. To obtain accurate measurement results, wait 3 minutes before starting the next measurement. ⚠️ Although unused, the product has been opened once for photography, so the product condition is listed as "like new." ＊Instant purchase welcome, silent purchase at midnight OK ◎ ＊First come, first served for single items ＊Bulk purchases welcome, feel free to comment ＊Free shipping! ・Please understand and purchase with home storage and simple packaging for shipping (⁎ᵕᴗᵕ⁎) ・Please check the actual photos for the condition of the product ♪ ※In order to sell at a slightly lower price, we may ship the item without the box due to shipping costs. #miiiku product list #miiiku alcohol checker 3-26