1.Very light product 2.Have high quality 3.Applied to agriculture and garden. 4.16L or 18L The product is light ,and very useful ,especially when you work in the garden,farm or fruit-bearing forest. ModelFST-16DContainer capacity16LWorking Pressure0.15~0.4MpaMating Battery12v/8AhRated Flow1.2-2.5L/min