Specifications Oscillator frequency: 32768hz Dimension: 6¾¡á8 Time keeping: ¡à30 seconds Circuit: c-mos Operating voltage: dc1.3v to 1.6v Operating temperature: -10¡æ to 50¡æ Average consumption current: 1.9µa to 2.1 µa at 1.5v Battery: sr626sw or equivalent Battery life: 18 months Torque: max torional load on second shaft