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Manual: A mechanical movement that must be wound by hand to store energy in the spring to keep running.

Markers – Indicators on the face of a watch to mark out time, indicate hours etc.

Measurement conversion: A feature, usually consisting of a graduated scale on the watch's bezel, that lets the wearer translate one type of measurement into another-miles into kilometres, for instance, or pounds into kilograms

Mechanical movement: A movement powered by a mainspring, working in conjunction with a balance wheel. Most watches today have electronically controlled quartz movements and are powered by a battery. However, mechanical watches are currently enjoying resurgence in pop

ularity.

Minute repeater: A watch which can additionally tell the time, at the push of a button or move of a small slide on the side of the case, by striking the hours, quarter hours and minutes since the last quarter hour on small goings inside the watch. Such complex watches are never inexpensive.

Moonphase display: A graphic display by means of a specially shaped aperture in the dial to indicate the phase of the moon, i.e. full, new or somewhere in between. Very popular in the 90's but losing favour in the second half of the century.

Movement: The inner mechanism of a watch that keeps time and moves the watch's hands, calendar, etc. Movements are either mechanical or quartz.

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