Compact and lightweight (0.18 lbs) pH Meter that can be used for both beer and winemaking. Small enough to fit in your pocket. Measures 0 - 14 pH, and temperature from 32-122 F (0-50 C) which is displayed on an LCD display. The pH fits easily into a protective sheath when not in use. Product comes with three different 250 ml buffer powders in pH 4.01, pH 7.00, and pH 10.01. Device is battery powered (1.5 V battery x 4 included).