PN: CR1216NOMINAL VOLTAGE: 3VNOMINAL CAPACITY (MAH) 1: 25NOMINAL DISCHARGE CURRENT (MA): 0.1OPERATING TEMPERATURE RANGE (DEG. C)2: -20 TO +85DIAMETER (MM): 12.5MMHEIGHT (MM): 1.6MMCHEMICAL SYSTEM: LITHIUM MANGANESE DIOXIDEWEIGHT (G) 3: 0.6G