Caliber
A caliber can be described as the type of movement used in a watch. It is expensive and impractical to design a unique movement for each watch model, so most manufacturers often use the same movement in different watch models, sometimes with significantly different designs. The term "caliber" is due to the fact that initially the type of movement was designated by a number (in inch lines) corresponding to its largest size; however, today unique names or alphanumeric indices that are not directly related to sizes are widely used.
Knowing the name of the caliber on which the watch you are interested in is built, you can, if desired, find more detailed information about the mechanism and determine how its characteristics meet your requirements.
Case shape
The shape of the watch case; most often the dial has the same shape, but there are exceptions (for example, a rectangular display in a round case).
This parameter practically does not affect the functionality, so the choice in this case is related solely to how convenient and pleasant-looking one or another option is for you. Also, shape data can be useful if the watch is chosen as a fashion accessory that plays a well-defined role in the image being created. As for specific options,
round cases are the most common nowadays — they are easy to manufacture, look neat and fit almost any style of watch.
Rectangular watches are also quite popular, they can also belong to different styles; however, such cases are more bulky than round cases, and therefore are used less frequently.
The square shape is actually a variation of the rectangular shape.
Oval is considered to be suitable primarily for women's watches, although there are also single men's models with such cases. There are other types of cases —
polygonal,
barrel-shaped, as well as products in non-standard
design.
Weight
Total weight of the watch. As a rule, it is indicated taking into account the complete strap/bracelet.
The lightest modern watch weighs
no more than 50 g. The most popular models weigh 50 - 100 g, and weight more than 150 g most often means not only a large, but also a fairly advanced device, usually for sports and tourism purposes.
Both light and heavy weight have their advantages: light watches create minimal inconvenience when worn, while massive watches are subconsciously perceived as a solid and reliable device.
