Breathalyzer, Portable Keychain Breath Alcohol Tester for Driver, Highly-Accurate Result Digital Battery Power with 5 Mini Mouthpieces

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About Breathalyzer, Portable Keychain Breath Alcohol

Test Yourself, Friends and Family Features: ☞Convenient and portable: One button operation breathalyzer, Portable alcohol breathalyzer. ☞Easy to read: Digital LED display with light blue backup easy to read even in low light conditions. ☞Smart & Fast result：Advanced flat surfaced alcohol sensor. ☞Energy saving: It can set automatic shutdown. And low power instructions are designed. Warranty: In order to let our customers buy this breathalyzer with confidence, we supply unconditional 30 days refund or replacement. Instructions: Step 1: Insert a mouthpiece into the breathalyzer. Step 2: Press the Power/Mode Button. You will hear a beep and the unit will start to count down from 15 on the DISPLAY and issued with a sound of "Warm up". This warm-up process prepares the sensor. Step 3: When the countdown approaches 2, begin to inhale a deep breath. When the countdown reaches 0, you will hear a second sound of beep indicating that you should blow into the mouthpiece. Blow through the mouthpiece until you hear a beep(within the 10 second countdown) . Step 4: Once the sensor has analyzed the breath sample, the estimated value is displayed. Power input: (1 x "AAA" batteries, not included)