This listing includes two Banshee 15V alkaline batteries, each delivering 60mAh of power. These batteries are designed as replacements for older Eveready 504 and NEDA 220 batteries that are no longer widely available. The 15V output makes them suitable for powering vintage equipment such as remote controls, flash units, exposure meters, and certain air pistols. Each battery measures 1.37 inches in length and 0.59 inches in diameter. The 18-month warranty provides coverage against defects.