PX28 Battery This is a popular silver-oxide cell are commonly used in cameras & light meters with a shelf life of 10 + years. Type: Silver Oxide. Voltage: 6.2V. Diameter: 13.0 mm.
Height: 25.2 mm. Also known as: 4SR44, V28PX, 544, KS28, RPX28, 4G13, 1406SOP.