Features: 100%brandnewandhighquality. DualLCDdisplay Quickresponseandresume Autopower-off Realtimeandalarmtime Specifications: Detectionrange:0.00-0.95mg/L Powerinput:Use2xAAAalkalinebatteries(notincluded)clockuse1xAG13buttoncell Color:white size:approx96x35x27mm(3.8x1.4x1.1inch) Netweight:38g Packageinclude: 1xDigitalBreathAlcoholTester(batteriesarenotincluded) 1xUsermanual