Alcohol 4 Digital LCD Display Breath Analyzer Tester(Black) 1) It delivers the best accuracy of it's class in the market with Dot test results for high end consumer use 2) Sensor: new generation semi-conductor sensor 3) Display: 4 digital LCD display,DOT-matrix on screen menu 4) Detection range: 0.000-4.000% 5) Measurement unit: ‰(promile);%BAC,mgl;gl 6) Accuracy: +-0.007‰ ＜2.0‰ 7) Warm up: between 15-50 seconds 8) Response time: less than 5 senconds 9) Certificate: DOT(),CE mark 10) Decttm technology: dynamic environental compensation technology 11) Evttm technology: electronic valve flow detection technology 12) Air sample: 5 seconds 13) Battery: 2 x AA batteries(not included) 14) Size: 115x51x18mm