Feature: 1. Application: Fish tank aerator is suitable for transporting fish, outdoor fishing, traveling, moving, bait cooling, and power outages. 2. Strong Oxygen Volume: Fish tank air pump has really strong oxygen volume, large output of oxygen, equipped with hose and bubble stone, dependable to use. 3. Low Noise: Professional manufacturing, reduce running vibration, stable noise reduction, effective sound absorption. 4. Battery Powered: The oxygen pump is powered by a battery (not include), which is not restricted by the venue and can be used anytime and anywhere. 5. Small Size: Aquarium air pump has simple structure, mini body, do not occupy space, convenient to store and use. Specification: Item Type: Aquarium Air Pump Material: Engineering Plastic Oxygen Pump: Approx. 12.2x8x4cm/4.8x3.15x1.57in Battery: 1pc D battery (not include) Package List: 1 x Fish Tank Aerator 1 x Hose 1 x Bubble Stone