Marine Metal Products' B-16 Hush Bubbles air pump is a very quiet aeration pump for fishing or home aquarium use. Operates on 1 or 2 alkaline D cell batteries for up to 75 hours. The Clam Shell package's unique design doubles as a dry box and protects the pump from moisture intrusion Extremely quiet aeration, the Marine Metal Hush Bubbles Live Bait Aerator operates on two D batteries +/- 75 hours (or 1 D battery for +/- 37 hours), comes with a 12-volt adaptor plug. Pumps up to 1.2 STL of air/minute and aerates 10 gallons. Includes 30 of soft airline tubing with weighted glass beaded air stone, and has a large adjustable stainless steel mounting clip. Power Bubbles 12 Volt Air Pump Marine Metal B-11 Bubble Box Live Bait Aerator, Water Resistant Air 5 Gallon Bucket Pump SALTWATER & FRESHWATER USE: This air bubbler is easily portable making it the ideal oxygen diffuser ideal for both fresh and saltwater use LIVE BAIT AERATOR: Keep your fishing bait lively with this water resistant air bubbler that maintains oxygen levels within your bait bucket - features a long-lasting, precision motor that runs +/- 75 hours with 2 alkaline D batteries or +/- 37 hours with one D battery and comes with a 12-volt cigarette adaptor QUIET OXYGENATION: Enjoy the peaceful quiet of fishing with the Hush Bubbles quiet oxygen diffuser that won't scare off fish - funnels 1.2 STL of air/minute in up to 10 gallons and includes a weighted air stone with 30 of airline tubing for greater dissolved oxygen