This Water Hand Pump fits most standard water bottle sizes. Lightweight and compact, this Bottled Water Pump is easy to carry! It is suitable for home, office, school, factory and hospital. Item: D-V Bio Battery Pump Model No.: 29799 (DC) Power: 2X"D" Size dry cell batteries Flow Rate: 0.9`1.0 gallon/min (3.514 liter/min) Material: ABS, P.E, Nylon, P.C, SUS 316 food-grade COLD/HOT Temp. : 32 ?F (0 ?C) / 140 ?F (60 ?C)