An analog watch is an older style watch that does not have a digital display. They usually have an hour hand, a minute hand, and a second hand. However, some analog watches only have an hour and minute hand. The analog watch requires several mechanical parts to work together very precisely to keep accurate time. The modern analog watch has a battery that powers an internal osculating device. The occulting device then powers the wheels of the second hand and causes it to move. The second hand latches onto and moves the minute hand after ever complete revolution and the minute hand repeats the process with the hour hand.