"Lightweight and portable, the submersible X-Treme Bait Tanks 12V Oxygen Box circulates, oxygenates, and filters your livewell water and is proven to maintain and increase dissolved oxygen levels while in use. In other words, the X-Treme Bait Tanks 12V Oxygen livewell aerator keeps your fish or baitfish oxygenated and energized. 11""L x 5.5""W x 4.5""H. Weight: 4.8 lbs. Keeps the fish in your livewell oxygenated and energized Maintains and increases dissolved oxygen levels Lightweight and portable Fully submersible"