Comparison A-Jazz AJ139 V2 MC vs Attack Shark R1

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 greatest acceleration during movement, at which the mouse maintains normal performance; if this indicator is exceeded, the cursor may “break down” (moving to an unexpected place due to incorrect processing of data from the sensor).

The faster the mouse moves, the greater the acceleration acting on it. Accordingly, this parameter determines the sensitivity to sudden movements, the extent to which this model is able to normally perceive and process such movements. High values of maximum acceleration ( 40 G, 50 G) are important first of all in dynamic games, especially for professional e-sportsmen and advanced enthusiasts. If the mouse is bought for relatively simple tasks (working with documents, surfing the web, etc.), you can ignore this indicator.

The ips (inches per second) parameter is the linear speed of mouse movement, expressed in inches per second, at which the manipulator's sensor is able to read the surface. In top models, the maximum mouse movement speed often reaches 400-600 ips, but devices with ips in the region of 200 are more common.

The switches in a mouse indicate which specific switches are installed under the main buttons, such as Omron, Huano, Kailh, TTC, or proprietary solutions from the manufacturer. These determine the click characteristics, actuation force, click volume, lifespan, and the likelihood of double-clicking over time.

Unlike the general switch type, which refers to the working principle—mechanical or optical—the brand and model provide a more precise understanding of the performance level. For example, two mice with mechanical switches might feel different when clicked: some may be softer and quieter, while others could be stiffer, louder, and feel more "gaming-like."

The durability of mouse switches is measured by the number of clicks the keys can withstand before they begin to show signs of wear or malfunction. Switches can have a lifespan of several million to tens of millions of clicks. In laboratory conditions, this parameter is checked using special testing machines, which diligently press the keys the required number of times, on the basis of which a verdict is made regarding the approximate service life of the switches.

Mice with a symmetrical body shape. The main advantage of such models is that their shape is the same well suited for both right and left hands. Considering that specialized "left-handed" devices are extremely rare, a symmetrical mouse can be a real salvation for a left-hander. At the same time, note that the symmetry in this case concerns only the shape of the case and the location of the main buttons; additional buttons can be placed exclusively under the right hand. If the mouse is bought for a left-hander, it is necessary to clarify these points.

- Teflon (PTFE). Polytetrafluoroethylene (PTFE) glides - also known as Teflon - are characterized by an extremely low coefficient of friction. As a result, mice with Teflon feet boast excellent glide and high cursor speed on any type of surface. The minimum level of friction allows you to easily control the movements of the mouse. Manipulators with Teflon gliders perform well in dynamic games and reduce wrist strain during prolonged work at the computer.

— Metal. When properly sanded, the metal feet provide excellent glide for the mouse, and they also have a long service life before abrasion. Note that manipulators with metal gliders are best used on plastic or other hard-wearing playing surfaces. Using a mouse without a mouse pad runs the risk of scratching the surface.

The length of the cable that is equipped with a mouse with the possibility of a wired connection (see "Type of connection").

When choosing this parameter, you should first of all take into account the distance from the manipulator to the connection port: a cable that is too short may simply not reach the connector, and a cable that is too long may get tangled at hand and create inconvenience. As for specific values, the most modest wire length in modern mice is 1 m or less ; such devices are intended mainly for laptops. Most desktop manipulators come with cables that are 1.1-1.5m or 1.6-2m long, with some models running longer than 2m.