Alarm: A watch feature that sets an alert at specified time.
Altimer: A device that determines altitude by responding to changes in barometric pressure.
Analog: An analog display is one which shows time in 12 hours format with hour, minute and/or second hands.
Analog Digital: It is a combination of both analog and digital displays. It is also known as anadigi.
Automatic: It refers to the movement mechanism of a watch that works with the acceleration of the wearer's wrist. This mechanism is said to have been first invented in the 18th century by Abraham-Louis Breguet.
Base Metal: Any non-precious metal such as steel.
Bezel: The ring which surrounds the watch face or dial. It may be made of stainless steel, gold, or gold plate.