Package Includes:1 x Digital LCD Alcohol Breath Tester (Full Kit Including All Accessories)Specification:Sensor: Alcohol SensorAdvanced oxide semiconductorWarm-up time: within 10 secondsRespond time: within 5 secondsOperating temperature: 5 ~ 40Detection Range: 0.00-0.19% BAC and 0.0-1.9g/l (or 0.00-0.95mg/l BRAC) Accuracy: 0.01% BAC (0.1g/l) Digital Display Results (% BAC/g/l) Power by: 2 x AAA 1.5V Alkaline Batteries (For small safe gadget and fast shipping, we have not included it for you) Description : PFT-68S Digital LCD Breath Alcohol Analyzer Tester Detector Key Chain Breathalyser 4 Mouthpieces This is a breath testerprofessional alcohol professionalliquid crystals100% brand new PFT-68S liquid crystal, each extra-extra 4 mouthpieces. When the alcohol content exceeds the standard, it will alarm you and remind you that it might be dangerous, it is very useful for driving after drinking. Except above, it has a vice function which is also used as a key chain, equivalent to three products, if only you buy it. There is an automatic power-off function, saving energy and economy. The low voltage indicator helps yousave a lot of money andmake you environmental. Fast response and CV, absolutely do not have to worry about its professional level to test alcohol, a red backlight makes the detector display more clearly, even if it is in the night.