We are offering Features -No need to warm-up, rapid test, result within 1 second-No need for mouthpieces, clean and hygiene-Fuel cell sensor-Dot-Matrix colorful LCD-Matrix red and green light corresponds to different results-Flashlight helps in midnight-Dolphin shape design Technical parameters Testing range: 0-2mgl, 0-0.4% BAC, 0-4%0BAC, 0-4glAlarming: can be customizedWorking temperature and humidity:0-500C, less than95%RH No DewsBattery: 4*AAADimension: 284mm*69mm*74mmWeight: 400gCertificate: CE, RoHS