Duracell® Button Battery Pack, Silver Oxide, 1.5 VDC Nominal, 190 mAh Nominal Capacity, SR44, Flat Terminal, 4 to 6 years Shelf Life, 12 mm L x 12 mm W x 5 mm H
High volumetric energy density of silver oxide button cells and their ability to deliver this energy at relatively high current drains, make them ideal for miniature devices, such as watches, thermometers, calculators and handheld gamesSilver cells also have an extremely stable discharge voltage, good shelf life, and the ability to operate over a wide temperature range