- Sapphire Glass -
This type of glass is produced by synthetic alterations. This material is much harder and will resist scratches better than other materials like acrylic or glass. Usually, sapphire glass is used in the construction of higher end watches due to its durability.
- Screw Down Crown -
This part of a watch screws in the case with ease. By screwing this piece in rather than pushing it in, you will be able to improve the waterproof nature of the watch. Rolex was the first manufacturer to use this type of crown starting in 1926.
- Screw Down Push Pieces -
These pieces go into the case of the watch by screwing them down. By not having to push in the pins, the owner of the watch is able to reduce possible damage and increase waterproofing.
- See Through Case Back -
A see-through case back is generally made from mineral or sapphire glass. Having one of these types of case backs will allow a watch owner to view what is going on inside of their piece.
- Shock Protection -
Dropping a watch can create a lot of damage without the right protective measures in place. Shock protection is a system that watch manufacturers use to keep the internal parts of a watch safe from dropping. Generally, this system is comprised of a bunch of metal springs. These springs are designed to take the brunt of impact and protect parts like the balance wheel and pivots. Generally, a watch that is deemed shock proof can withstand a drop from up to one meter. Incabloc is commonly used in most shock protected watches, but there are a number of watch builders who have their own systems in place.
- Skeleton Watch -
Skeleton watches are specifically made to show owners what is going on inside of their timepiece. Many of the skeleton watches on the market are considered works of art due to their intricate design.
- Small Seconds -
Small seconds is a dial where seconds are displayed. Usually, this type of dial is found on pocket and manual watches. The second hand on these types of watches are attached to the minute hand. This part of a watch is also referred to as a subsidiary second hand.
- Stainless Steel -
The term stainless steel is used to identify steel with a certain type of purity level. Most watchmakers use this material due to the durability it has. Stainless steel is also non-corrosive. The most common stainless steel alloys used in watch production contain nickel and chromium.
- Stop Seconds -
With stop seconds, watch users are able to set their piece to an exact second. If the crown is pulled out, the second hand will cease to move. The user will be able to reset the time correctly. After the right time is set, the watch owner can put the crown back in and resume normal function.
- Stopwatch -
Most watches feature stopwatch capabilities. This allows a watch owner to measure a time period in seconds. If a watch does feature a stopwatch design, it is generally called a chronograph.
- Subdial -
A subdial is usually located on the face of a watch. This dial serves a number of different purposes like keeping track of the date or even elapsed minutes and hours.
- Superluminova -
This material is used to make the hands on a watch glow in the dark. Over time, the luminosity produced by this substance fades. This material is non-radioactive unlike other materials used in the past such as tritium. Superluminova is also more stable and can stay luminous for years to come.
- Swiss Made -
In order to be deemed Swiss Made, a watch must be assembled controlled and adjusted in Switzerland.