RUTIDA Breathalyzer & Alcohol Tester with 12 Mouthpieces
RUTIDA Breathalyzer & Alcohol Tester with 12 Mouthpieces, Portable Alcohol Breath Tester Professional Breathalysers with LCD Display Digital Fast, High Accuracy Compact design allows you to take the alcohol tester anywhere. For birthday parties and driving, for karaoke and hanging out with friends. Drive home safer. Step 1 Hold down the switch for 3 seconds, the display will be activated with a beep. Step 2 Call the warm up mode, which starts the countdown from 10 to 00. Step 3 "Blow" sign, start blowing at medium intensity for 3 to 5 seconds and wait for the test result. Step 4...