Hagen Marina Battery Air Pump?

• The Marina battery operated air pump provides auxiliary air when your main air source fails. A reliable back-up air source during household electrical power failure, or a great portable aerator for fish in transit. Comes with air Stone and 18" Tubing. Brass cylinder improvement for lengthened service. Uses two "D" Cell batteries (not included).
• Item Package Height: 5.9
• Item Package Length: 4.0
• Item Package Width: 2.1