The Marine Metal Baby Bubbles Air Pump is a great little air pump for minnow buckets and small aquariums, or it can be used as a backup air pump. This air pump can aerate up to three gallons. This pump is designed for freshwater and saltwater use.The Marine Metal Baby Bubbles Air Pump features an impact, water resistant case with a rubber booted switch. This air pump includes an air stone and 24 inches of silicon air line tubing.Aerates up to three gallonsPrecision motor runs +/- 40 hours on two AA batteries, also runs on one batteryWater resistant case