WatchesAtlas / Watch knowledge
The Watch Encyclopedia
Understand the details that make a watch.
23 terms
Clear filtersSafety clasp
A clasp incorporating an additional retaining feature to reduce accidental opening.
Cases, dials & braceletsSalmon dial
A collector description for a dial with a pinkish copper or salmon-like colour.
Cases, dials & braceletsSandwich dial
A layered dial in which openings in an upper layer reveal a lower layer, often carrying luminous material.
Cases, dials & braceletsSapphire crystal
A crystal made from synthetic sapphire, chosen for its high resistance to scratching.
Cases, dials & braceletsScrew link
A bracelet link retained by a screw-based fastening arrangement.
Cases, dials & braceletsScrew-down crown
A crown secured by a threaded connection, often as part of a water-resistance design.
Cases, dials & braceletsScrew-fixed caseback
A caseback held by separate screws, distinct from a caseback that itself screws into the case.
Cases, dials & braceletsScrew-in caseback
A caseback secured by turning it into a matching threaded connection in the case.
Cases, dials & braceletsSector dial
A dial layout divided into visually distinct areas or scales, often emphasising circular segments.
Cases, dials & braceletsSedna gold
Omega's name for a proprietary rose-gold alloy used in selected watches.
Cases, dials & braceletsShark mesh
A collector name for a comparatively coarse woven-metal bracelet style.
Cases, dials & braceletsSkeleton watch
A watch with components cut away or exposed to reveal more of the movement.
Cases, dials & braceletsSnap-on caseback
A caseback retained by a press-fit or snapping connection rather than a threaded closure.
Cases, dials & braceletsSolid end link
An end link made as a substantially solid component rather than a folded hollow structure.
Cases, dials & braceletsSpring bar
A telescopic pin securing a strap or bracelet between the lugs.
Cases, dials & braceletsSquare case
A case with a primarily square face outline, which may have rounded corners or shaped edges.
Cases, dials & braceletsStainless steel
A family of corrosion-resistant steel alloys used for cases and bracelets.
Cases, dials & braceletsStone dial
A dial made from or incorporating a slice of decorative stone.
Cases, dials & braceletsSubdial
A smaller dial within the main dial, used for seconds, calendar or other indications.
Cases, dials & braceletsSuper Titanium
Citizen's name for titanium combined with its specified surface-hardening technologies.
Cases, dials & braceletsSuper-LumiNova
A trade name for photoluminescent materials that absorb light and later emit visible light.
Cases, dials & braceletsSword hands
Hands with a blade-like outline, often broad through part of their length.
Cases, dials & braceletsSyringe hands
Hands with a broader body and a long, fine pointed extension.