A glossary of watch terminology explained, listed in alphabetical order, continued from Part 1 (A-C) and Part 2 (D-O):
P
Automatically adjusts the days of the months, i.e. 28, 30 or 31 days and also adjusts for leap years.
Push button clasp
Small buttons are positioned on either side of the clasp that can be simply pressed to open the clasp.
Q
Quartz movement
The electric current from the watch’s battery causes the quartz to vibrate at a very high frequency for precise timekeeping. Watches with this type of movement typically have no moving parts and are battery driven.
S
Sapphire crystal
Transparent synthetic glass window that protects the watch face. Sapphire crystal is similar in construction to the sapphire gemstone and is the most scratch resistant out of all the watch crystals.
Typically used on diver watches to seal the crown to the watch case to protect from water leaking in.
Shock-resistant
A watch that claims to be shock resistant should survive being dropped without any damage, typically based on a 1 meter drop onto a hardwood surface.
Solar-powered watch
A watch that is solar-powered is effectively powered by exposure to light, i.e. converting light energy into electronic energy.
Stem
The stem is typically a thin piece of metal like a pin or rod that connects the crown (winder) to the watch movement inside the case. Combined with the crown, the stem is used to wind up a watch or set the hands to the correct time.
Stopwatch
Also referred to as a chronograph, the Stopwatch is used to record elapsed time.
Sub-dials
Sub-dials are miniature dials set inside the main dial or watch face of an analog watch. For example, some watches have a moon-phase sub dial or chronograph sub dial or month/day of the week sub dial or a 24 hour sub dial or even a second hand set in a sub dial. Many watches typically display 2 or 3 sub dials on top of the main dial.
T
Tachymeter
A tachymeter is typically found on the bezel of a watch and is used to measure distance based on speed or speed based on travel time.
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Water resistant watch
Different watches come with different levels of water resistant capabilities and is measured in what is known ATM (atmospheres) or meter depth. Don’t be fooled by the given meter depth on a so-called water resistant watch. Many watches are actually only splash or rain proof and would not hold up to submersion. See my article on Water Resistance in Watch Terms Explained for more information.
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*Prices/discounts/shipping indicated correct at time of writing/publishing and may be subject to change anytime. E&OE.
*Prices/discounts/shipping indicated correct at time of writing/publishing and may be subject to change anytime. E&OE.
- Watch Terminology Explained, Part 1 (A-C)
- Watch Terminology Explained, Part 2 (D-O)
- Top Wrist-Watch Features & Functions Explained
- Different Types of Watch Crystal Dial Windows Explained
- Swiss-made versus Japanese Movement in Watches Explained
- Wrist-Watch Water Resistance Ratings Explained
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