Dimension: 6¾¡Á8 Thickness:3.22mm Specification:3hands Averge Consumption Current:1.8µA to2.3µA at 1.5v Oscillator frequency:32768Hz Operating Voltage: DC1.10V to 1.65v Operating Temperature: -5¡æ to 55¡æ Time Keeping: ¡À30s/M Battery:SR626W 377 or equivalent Battery Life:26 months.