The Marine Metal Quiet Bubbles Air Pump delivers powerful, ultra-quiet aeration for up to 40 hours. Built tough with water-resistant features, it's ideal for keeping bait alive in both fresh and saltwater environments. Runs up to 40 hours on (2) D batteries (not included) Pumps 1.4 STL/min for high oxygen output Aerates up to 7.5 gallons Quiet, impact-resistant design with neoprene seal Rubber-booted switch for added durability Includes weighted air stone and 24" silicone tubing Safe for freshwater and saltwater use