"RESOLUTION IS 0.01PH,ACCURACY AT 20 DEGREES CELSIUS + OR -0.01PH,CALIBRATION IS MANUAL,2 POINT,,THROUGH OFFSET AND SLOPE TRIMMERS,TEMPERATURE COMPENSATION 0 DEGREES CELSIUS TO 70 DEGREES CELSIUS,PROBE HI 1280,BATTERY TYPE 3 X 1.5V ALKALINE,DIMENSIONS WITH PROBE IS 7.6 INCH BY 1.1 INCH BY 0.6 INCH"