Marine Metal Products Bubbles air pump has a precision motor that runs 85 hours on 2 alkaline "D" cell batteries. Booted waterproof switch. Weighted glass bead airstone with 30" of air line tubing. Pumps 1.0 STL / minute Designed for fresh and saltwater use Space saver clam shell package 4.5"W x 8.375" Lx 2.375"D
