Comparison Trust Kerb Wireless Laser Mouse vs Trust Evo Advanced Wireless Compact Laser Mouse

The range of the wireless connection provided in the mouse (see "Connection Type").

Almost all modern wireless models work confidently at a distance of at least 2 – 3 metres. So you need to pay attention to this parameter mainly when you plan to use the mouse at a greater distance from the computer — for example, when working with a projector at a presentation. At the same time, when evaluating the range, note that it is indicated for perfect conditions: the absence of interference and obstacles in the signal path, the full charge of the battery in the mouse, etc. In fact, the communication range may be somewhat less, so when choosing, it is worth taking a certain stock. Nevertheless, according to the claimed range, it is quite possible to evaluate the practical capabilities of different models and compare them with each other.

The direction the mouse is facing. Specified only for models with additional specialization or design features — namely, for laptop, gaming and vertical mice. Here are their main features:

— Laptop. Mice well suited for use with laptops. Most of these models have compact dimensions — the length of the case in them is less than 110 mm, and often less than 100 mm. This makes it easy to transport along with the laptop. And larger devices are considered laptops if such specialization is somehow indicated by the manufacturer. In addition, this category includes most models with a Bluetooth connection (see "Connection type") — such a module is found in almost any modern laptop. And wired laptop mice can be equipped with a wire winding system that allows you to adjust the length of the cable for different situations and twist it compactly for transportation.

— Game. Mice designed primarily for use in computer games and intended for gamers — including professional e-sportsmen (although the price category and capabilities of different models, of course, may vary). Such devices are often made in a characteristic "aggressive" design, with unusual patterns, logos, coloured backlighting (in some models — with effects), etc. On the functional side, gaming mice are distinguished primarily by increased sensor accuracy, as well as the presence of various specialized feat...ures — such as additional buttons with the ability to “attach” certain game actions or even a sequence of actions to them, a triple-click (“queue”) button, a sniper button, DPI switching (see below), weight adjustment, etc. Note that narrow the specialization of such models can be different: there are both universal gaming mice and devices optimized for a specific genre (shooters, RPGs, etc.) or even a specific game.

— Ergonomic (vertical). Mice of a specific design: the surface on which the hand is placed during work is not located horizontally in such models, but with an inclination to the right (in left-handed models — to the left). As a result, the body height is noticeably greater than that of traditional models — hence the name "vertical". And the user's hand actually covers such a case from two sides: on one side (on an inclined surface) there is a palm, on the other (in a special recess) — a thumb. This position of the hand is considered more natural and comfortable than the classic horizontal position, it reduces the load on the joints and ligaments, thus reducing fatigue and the likelihood of carpal tunnel syndrome and other disorders. Vertical models are well suited for those who have to work at the computer for a long time — except that it may take some time to get used to the unusual shape after a traditional mouse.

Resolution of the sensor responsible for tracking mouse movements on the work surface. Specified in DPI — dots per inch.

The physical meaning of DPI as a whole is as follows. The sensor of a modern mouse works on the same principle as the camera matrix, and consists of pixels. And DPI is the number of pixels that fall on 1 inch of the underlying surface (length or width), "visible" by the sensor.

It is believed that more DPI means a more advanced sensor and mouse in general; nowadays, models for 3500 – 5000 DPI, 12000 DPI, 16000 DPI even more are not uncommon. In a way, it is — high resolution contributes to accuracy. However, the only thing that is directly determined by this indicator is the speed at which the cursor moves across the screen: the higher the resolution of the sensor, the greater the number of pixels that the cursor will move when the mouse itself moves a certain distance. At the same time, it is worth recalling that too high a speed is even more undesirable than too low. So the real need for high DPI ( 1000 and above) arises mainly when working on large screens (4K resolution and more); for more modest displays (HD and Full HD), smaller values are often enough.

The type of power used by the wireless mouse (see "Connection Type").

Modern mice can be powered by replaceable cells, by a built-in battery, or by a mousepad. The first option is good because dead batteries can be replaced with fresh ones in a matter of seconds, no need to waste time charging. At the same time, replaceable cells are sold both in the form of disposable batteries and in the form of rechargeable batteries, which gives the user a choice: to buy inexpensive batteries regularly or to spend money on a battery (s) with a charger once. Here are the main sizes of such elements found in modern mice:

— AA. Widely known "finger" batteries. A fairly common option, although less popular than the smaller AAA — in fact, because of the larger size, poorly suited for compact mice. On the other hand, AA cells have higher capacitance. The number of such batteries can be different, most often there are models for 1xAA or 2xAA.

— AAA. "Mini finger" or "little finger" batteries. More compact than AA, due to which they are widely used in modern mice. The capacity of such elements, however, is lower, however, mice do not consume so much energy, and even with 1xAAA power supply, battery life can be calculated not only for months, but for years. Also, there are often models on ...="/list/267/pr-15332/">2xAAA, and extremely rarely on 3xAAA.

As for other ways of eating, their features are as follows:

— Accumulator. Own built-in battery is convenient primarily because it is initially included in the package, you do not need to buy it separately. And the further operation of such a mouse does not require additional expenses — it is enough to charge it from time to time. In addition, batteries can be made more compact than replacement cells. There are two main disadvantages of such a power supply, compared with the same batteries. Firstly, this is less battery life — in the most "long-playing" rechargeable mice, the battery life does not exceed 120 days (for batteries, this is a very limited indicator). The second point is the inability to quickly remove and replace the battery. This means that with a dead battery, there is only one option — charging, and it takes time; however, many mice allow use directly in the process of charging. But if the battery fails, at best, the device will have to be carried to the service, at worst, it will be changed entirely.

— From the rug. Quite a specific option: powered by a special pad that transmits energy to the mouse wirelessly. The pad needs to be connected to a computer port (usually USB), so such mice are very conditionally wireless. One of the advantages of such models is that they do not need to monitor the battery status. On the other hand, you can use the mouse only with the supplied mouse pad; if it is missing, the device becomes useless; and freedom of movement is limited by the length of the wire. Thus, mice with such a power supply do not actually have key advantages over wired models, and they are much more expensive. So nowadays, food from the rug is extremely rare.

The operating time of the mouse powered by replaceable elements (see "Power") on one set of batteries.

The operating time in this case is quite approximate: it is indicated for a certain average mode of use. The actual battery life may turn out to be either less or more than the claimed one, depending on the specifics of the application; in addition, the quality of a particular brand of batteries greatly affects the operating time. Nevertheless, this is a fairly reliable indicator, it is quite possible to evaluate different models and compare them with each other: the difference in the claimed operating time is usually quite consistent with the difference in real battery life when using batteries of similar quality.

It is worth saying that modern battery-powered mice have pretty solid battery life, measured in months; in the most "long-playing" models, the operating time is about 36 months (that is, 3 years).

The total weight of the mouse. For models with a wired connection, usually, it is indicated without cable, and for devices with weight adjustment (see above) — without weights.

This parameter is important primarily for professional gaming applications, although it is often relevant for ordinary users. Theoretically, less weight promotes speed and reduces fatigue. At the same time, in fact, much depends on the personal habits and preferences of the user: a mouse that is too light may “not be felt in the hands” and not give familiar feedback. Therefore, although most mice have a lower weight limit of 60 – 80 g, however, even among professional gaming models there are much more massive devices — 120 – 140 g or more. The lightest variety of "rodents" is laptop (see "In the direction"), among them devices come across and less than 60 g.

Also note that the weight to some extent depends on the size and “tricked out” of the device, but there is no unambiguous dependence here: models similar in size and functionality can differ markedly in weight.