Everybody needs a backup plan and the Marina Battery Operated Air Pump is your sidekick in a pinch. The portable design is the perfect air source for fish in transit, or as a reliable air source when no power is available. Give your fish comfort and reliability in their aquatic home. About Marina Dedicated to providing a wide variety of friendly and affordable aquarium products for all types of fish keeping, Marina’s extensive product line has something for every fish hobbyist. Newbies love the ease and convenience of Marina’s fish starter kits, and those with experience appreciate the reliable efficiency of their filters and heaters. A varied selection of colorful, creative decorations such as gravel, plants, and ornaments, provide a gorgeous underwater environment. A vast array of maintenance and breeding accessories are practical, reliable, and timesaving so you can spend more time enjoying your aquarium and less time cleaning it. * Provides auxiliary air when main air source fails * Ideal for fish in transit or during fishing * Comes with air stone and 18 in. tubing * Requires (2) D cell batteries (not included) * Dimensions: 1.5L x 2.5W x 5H inches