Comparison Invicta Pro Diver Men 29178 vs Casio MDV-106-1A

The country of origin of the brand under which this watch brand is produced. Usually, the headquarters of the manufacturer is located in the same country. But production facilities may be located in another country, or even in several countries. Most of the brands under which modern watches are produced come from the following countries (in alphabetical order): Austria, England, Germany, Denmark, Spain, Italy, Korea, Russia, USA, France, Switzerland, Japan.

Note that in the modern world, the quality of a product is very weakly related to its country of origin (both claimed and actual). Much more it depends on how carefully one or another manufacturer controls the quality in their production. So when choosing, it makes sense to focus not so much on “nationality” as on the overall reputation of a particular brand.

— Quartz. A mechanism based on an electronic quartz oscillator. Such a generator produces a strictly defined number of pulses per second, and on the basis of this data, the clock keeps time. In common parlance, only clocks with hands are called “quartz”, but the same principle applies to “electronic” models (with a digital display). Anyway, the main advantage of quartz movements is high accuracy — even in inexpensive models it is about ± 15 sec / month, and in the most advanced it can reach ± 0.3 sec / month. And these watches are much cheaper than mechanical ones. The main disadvantage of "quartz" is the need for power supply; and although a miniature battery usually lasts for several months, it still has to be changed periodically. In part, this moment is compensated by the use of solar panels and automatic winding systems (see "Source of movement").

— Mechanical. A traditional type of watch movement that uses a compressed spring as the power source. One of the advantages of such watches over quartz ones is that they do not require a battery — it is enough to wind the spring regularly, which can easily be made into a habit; and in the presence of automatic winding (see the relevant paragraph), the matter is even more simplified. "Mechanics" is noticeably more expensive than "quartz", although this may be a virtue that emphasizes the level of the watch and the status of its owner. But the unequivoc...al disadvantage of this option is the relatively low accuracy: if in quartz watches the error is measured in seconds per month, then in mechanical watches it is already about seconds per day. So, it is worth paying attention to this option either to fundamental connoisseurs of the classics, or to those who, by the nature of their activity, it is important to have a watch that does not depend on batteries (travelers, sailors, military, etc.).

A device primarily used in mechanical watches that provides continuous winding of the watch by moving the wearer's hand. Most often, it is made in the form of a rather massive plate in the form of a sector, which is fixed with a narrow end on an axis in the centre of the mechanism. When the hand and the watch attached to it oscillate — for example, while walking — the plate rotates, providing a spring winding.

One of the advantages of self-winding watches is obvious: they do not need to be wound as often as classic mechanical ones, and if worn constantly, they can do without manual winding at all. The course of such watches is more uniform, since the spring is constantly in an almost compressed state — this has a positive effect on accuracy. Also , automatic winding in mechanical watches is useful for waterproof models, in which the crown is attached to the thread during non-working hours, sealing the case — since the thread does not have to be used often, it wears out less, which has a positive effect on reliability. On the other hand, the self-winding plate increases the weight and thickness of the case, as well as the cost of the watch. In addition, the use of this function in miniature female models is associated with a number of difficulties, and if the owner leads a sedentary lifestyle (for example, due to old age), all the advantages of self-winding come to naught.

Note that there a...re also self-winding quartz watches — these are models with Kinetic technology. For more information about them, see "The source of the move."

The number of stones provided in the design of the watch.

This parameter is relevant for models that have arrows and corresponding moving parts in the "stuffing" (wheels, gears, etc.). The stones in this case are, in fact, a specific kind of bearings used to fasten rotating parts. "Stones" are made from synthetic minerals (for example, artificial sapphires). They provide slightly less friction than traditional metal bearings, and most importantly, they are more reliable and less prone to wear, which accordingly affects the durability of the entire mechanism. However, it is worth noting here that these advantages are relevant mainly for mechanical watches (see “Mechanism type”), quartz models in this sense are not so demanding on bearings.

It is believed that the more stones, the better, but here it is worth considering the functionality of the device. So, for a watch with a central second hand, 16 jewels are considered sufficient, with a side one - 17, but if there are additional functions (calendar, days of the week, etc.), this number can increase accordingly. In addition, the presence of 40 or more stones is often not so much a real necessity as a publicity stunt.

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.

The power source of a quartz watch (see "Movement type") — in other words, the type of power source used in it.

— Battery. A miniature battery, usually in the form of a characteristic "pill"; used exclusively in quartz watches (see "Movement type"). The main disadvantage of this option can be called the need for replacement when the charge is exhausted; at the same time, almost all replaceable elements of miniature standard sizes used in wristwatches are produced only in the format of disposable batteries, without the possibility of recharging. On the other hand, they provide a long time of work, are inexpensive and are sold almost everywhere.

— Solar battery. Power supply system consisting of a photocell and a built-in battery. The photocell generates electricity when exposed to bright light, and the battery stores this energy and feeds the watch mechanism. The convenience of such models lies in the fact that with the regular presence of solar (or at least bright artificial) light, the owner does not have to worry about the energy reserve. On the other hand, the photocell significantly affects the price, and if you constantly stay indoors or wear clothes with sleeves that cover your watch, it becomes practically useless. Therefore, this option has not received wide popularity, and it is worth paying attention to such models primarily because they are regularly and a lot outdoors and/or in...bright daylight.

— Autoquartz movement (“kinetic”). A kind of automatic winding (see above), used in quartz watches. This technology was originally released by Seiko under the name "Kinetic", but nowadays it can be found in other manufacturers. Anyway, such systems work similarly to mechanical self-winding — transforming the energy from the movement of the user's hand into the energy necessary for the operation of the mechanism. However, in this case, such a mechanism does not start the spring, but rotates a miniature generator that generates electricity. The resulting charge is stored in a special capacitor and used to operate the quartz movement. Models with such mechanisms are positioned as "quartz watches in which you do not need to change the battery", and in general it is so. At the same time, they have the same limitations as conventional self-winding devices — in particular, with a sedentary lifestyle, this technology is practically useless. Yes, these watches are quite expensive.

The presence of a case back made of transparent material in the design of the watch, allowing you to see the mechanism.

This element does not play a practical role, but it gives the watch an original appearance. Note that the transparent cover can be combined with a Skeleton, open balance (see below) and/or a transparent case (see above) case. The key differences between these features are that Skeleton and the open balance allow you to see the movement from the front, while the transparent case can be seen through, but the movement may not be visible.

The crown (or the crown of the hands, if the watch is quartz), which is fixed on a special thread during non-working hours. Accordingly, for use for its main purpose, such a head must first be unscrewed, and only then it can be rotated.
The screw design serves two main functions. Firstly, it does not allow the head to move in case of accidental contact with surrounding objects (whereas a conventional head can be hooked and rotated in case of an unsuccessful hand movement, knocking down the position of the arrows). Secondly, the head fixed on the thread plays the role of a protective cap covering the gap between the axle and the body - this improves moisture protection.

The material from which the bracelet/watch strap is made. Note that the division into bracelets and straps is rather arbitrary, the basis for it is precisely the material. In modern watches, there may be such options:

— Nylon strap. Nylon is a synthetic material that has a characteristic structure in the form of interwoven threads in watch straps. In most cases, these threads are quite large, due to which the nylon straps are similar in appearance and texture to the ties of tourist backpacks; this option is typical for sports watches. However, there is another variety — finely woven nylon, which is used mainly in women's watches (see "Gender"). Of the practical properties of this material, it is worth noting, first of all, unpretentiousness and resistance to water, including salty; in addition, it can be given almost any colour, and the combination of multi-coloured fibers allows you to create original and bright straps.

— Rubber strap. In this case, rubbers mean elastic materials that, in terms of properties, are a cross between plastic and rubber. Rubber is denser, harder and stronger than rubber, while noticeably softer and more flexible than plastic, which allows it to be used for watch straps. Of the advantages of this option, it is worth noting, first of all, high wear resistance and moisture resistance, which, combined with the appearance features, makes these straps a good option f...or watches in a sporty design. But among the classic models, rubber is usually used in inexpensive watches and has rather modest characteristics.

— Leather strap. Genuine leather straps are typical for quite expensive watches: this material is expensive, while it has a solid and rich appearance. In addition, it is notable for its high strength, moisture resistance and durability. Of the shortcomings of the skin, in addition to the price, it is worth noting a certain tendency to scratches, as well as increased care requirements — otherwise the product may lose its “presentation”.

— Leatherette strap. As the name suggests, leatherettes were created as an alternative to real leather. Their main advantage is a relatively low price: being practically indistinguishable from a leather bracelet, such a bracelet will cost much less. On the other hand, this material is less durable, wears out rather quickly and is generally not so reliable. Note that today different types of leather substitutes are used, and the quality of this material usually directly depends on its price.

— Steel bracelet. The watch bracelet consists of links connected to each other; in this case they are made of stainless steel. This material is strong, durable, practically not subject to corrosion, moreover, it has a solid appearance and is quite pleasant to the touch; at the same time, the cost of steel allows it to be used even in inexpensive watches. Such bracelets are quite “heavy”, however, some owners consider this moment to be a virtue, because. it gives a feeling of solidity and reliability. And of any significant shortcomings of steel, one can only note high thermal conductivity — the bracelet will noticeably “cool” the hand if the watch has lain in the cold for some time (though not for long — just a few minutes).

— Milanese bracelet. Milanese are called metal bracelets made of links of very fine weaving (about 1 mm in size, or even less). The material of such a bracelet may be different; most often it is steel, but more expensive metals are also found. Anyway, such a bracelet has an original appearance, and also provides good air access, allowing the skin to breathe. Among the shortcomings of Milan, it can be noted that the links can “bite” the hair on the arm, creating discomfort. Thus, and also to keep the cost down, some watches do not use Milanese weave on the entire bracelet, but only on part of it (usually it is about half of the entire bracelet).

— Titanium bracelet. Bracelets made of titanium alloy are much stronger than steel, with less weight. They also conduct heat less well, making them better suited for cold weather. At the same time, titanium is characterized by almost all the same advantages: high strength and reliability, solid appearance, resistance to corrosion. Its main disadvantage is the high price, due to which this type of bracelet is found mainly in premium watches.

— Gold bracelet. Jewelery gold bracelets are mainly used with cases made of the same material (see the relevant paragraph). A watch with a gold bracelet is not so much a device for measuring time as a status accessory, or even a piece of jewelry; the latter is especially characteristic of female models.

— Silver bracelet. Silver bracelets are found exclusively in watches with cases made of the same material. Like the gold described above, this material is used not so much for practical as for fashion reasons — in order to give the watch a rich appearance and emphasize the status of its owner. At the same time, for a number of reasons, silver bracelets are extremely rare.

— Ceramic bracelet. A premium material found predominantly in women's watches (although there are also men's models with ceramic bracelets). Ceramic not only looks good, but also retains its original appearance for a long time — thanks to its excellent resistance to scratches, dirt and stains. In addition, this material has a relatively small weight; and the high cost in this case is more of a virtue — it emphasizes the high level of watches. Among the shortcomings of ceramic bracelets, some fragility can be noted — a strong blow can split the links.

— Plastic bracelet. This category includes both the actual bracelets, woven from individual links, and straps made of flexible plastic. The second variety is similar to rubber straps, see the relevant paragraph for more details. As for the bracelets, they are usually combined with cases made of similar materials (plastic or carbon), and can be used in different categories of watches — both relatively inexpensive and quite advanced. The quality of plastic in this case, usually, is directly related to the price category of the device.

— Tungsten bracelet. Bracelets made of tungsten alloy are highly durable and reliable; these properties are further emphasized by the fact that tungsten has a very high melting point. And yes, it does look good. At the same time, it does not have key advantages over other premium alloys (titanium, see above) and is noticeably more expensive due to the complexity of production. As a result, such bracelets are extremely rare, mainly in combination with cases made of the same material (see "Case Material").

— Aluminium bracelet. Quite a rare option, found in single watch models. Bracelets made of aluminium are lighter than steel, they are not inferior to them in terms of strength and reliability, however, they are more expensive.