Excellent power, even if small!Compact design, super lightweight and convenient to carry.Silence and displacement are strong and can be used for various fishing.Has a hook on the back side, making it ideal for pumps for making use of smelt, meburing, aging, and Tanago ETC.Displacement: About 0.5L/min.Battery used: 2 AA batteries (not included).Accessories: Hose (approx. 70 cm, with stone)