Breathalyzer, Portable Breath Alcohol Tester with Audio Warning and LCD Screen Auto Power Off for Personal Home Use, Breath Alcohol Detector with 50 Replaceable Mouthpieces Main FeatureONE TOUCH OPERATION & AUTO SWITCH OFF--Press the switch for 1s, it will enter into three modes: Warm-up (20s), Blowing and Result showing. Test results will display about 10s on the LCD, and then the tester will automatically switch off.SENSITIVE & ADVANCED SENSOR--Featured with NM Hot-wire alcohol sensor, it is very sensitive. Different levels will have different audio warnings. And it will give a quick response, wait less than 5s after blowing.LCD DISPLAY & AUDIO WARNING--It can automatically remind your safety when the alcohol content exceeds the preset limited level, and send you 'No Driving' icon, 'Hi' and an audio warning. Under the 'Result' mode, clicking the 'Switch Button' can change the unit. It can be suitable for different countries.FIVE PIECES MOUTHPIECES FOR FRIENDS--With 50 pieces mouthpieces which can be cleaned and recycled. That must be much easier for your family or friend to test.PORTABLE & CONVENIENT TO USE--Charged by 3 AAA batteries (not include). With small size, it easily fits in a purse or pocket, hung on a keychain, or placed in car. The result is displayed on the LCD screen with light Blue backup. Even in a gloomy environment, the result will be seen clearly with a wet finger.Specification1. Accuracy????R10% F.S2. Alarm concentration???0.24mg/L(0.05%BAC???0.5g/L)3. Sensor type:Nano Semi-Conductor Sensor4. Voltage: 3V5. Preheat Time: 15s6. Weight: 0.14lb7. Size: 0.35 x 0.25 x 0.08 inches8. Color: Black9. Power Supply: 3 AAA Battery (not included)Package1 * Breath Alcohol Tester1 * Free 50 Pieces MouthpiecesWarm Tip1. After drinking, it is recommended to wait 20 minutes before testing, because alcohol takes about 20 minutes into the blood from the digestive organs, and residual alcohol in the mouth takes time to dissipate.2. To get a m