Attwood WaterBuster Portable Pump - 200 GPH [4140-4]WaterBuster Portable Pump Part #: 4140 4 This patented, submersible pump is a great way to remove unwanted water from boats, pool covers, aquariums and sump pits. Convenient and safe, too, because it needs no electrical cord runs up to 5 hours on three alkaline D batteries. Excellent for use as a portable pump out device for paddle boats, inflatables, duck boats, dingies and kayaks. Any craft that lacks a hard wire, permenent electrical system.