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Comparison A4Tech Bloody B750N vs A4Tech Bloody B820R

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A4Tech Bloody B750N
A4Tech Bloody B820R
A4Tech Bloody B750NA4Tech Bloody B820R
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Main
Optical switches Light Strike with a delay of only 0.2 ms. Reinforced gap. Drainage holes to protect against accidental spills.
Connectionwiredwired
Cable length1.8 m1.8 m
Typefor gamefor game
Form factorstandard (ANSI), with Numpadstandard (ANSI), with Numpad
Keyboard
Key profilevysokyivysokyi
Key typeclassic typeclassic type
Switch technologyoptical-mechanicaloptical-mechanical
SwitchesLight StrikeLight Strike
Anti-Ghosting
#KRON-KRON-KRO
Fn key
Features
Cyrillic colourtransparenttransparent
Volume controlfnfn
Game mode
LightingmulticolorRGB
Lighting effects++
General
InterfaceUSBUSB
Skeleton keyboard
Braided cable
Waterproof
Metal structure
 /aluminium base/
Replacement keys included
 /8 pcs/
Size444x132x37 mm445x132x37 mm
Weight825 g
Color
Added to E-Catalogjanuary 2022july 2017

Lighting

The colour of the backlight provided in the design of the keyboard.

In general, the backlight performs two functions: practical (makes the keys more visible in low light) and aesthetic (gives the keyboard a beautiful appearance). However, it cannot be said that non-backlit keyboards will be unusable in the dark, the light from the monitor will still illuminate the buttons. The simplest version of the backlight is one-colour. In this case, specific colours can be different: for example, white is well suited for general-purpose keyboards (work or home), but other shades can be found in gaming or design models, for example, red, green, blue, purple or orange. If two or three colours are indicated for the keyboard, this may mean either the ability to switch between these colours, or that this model comes in several versions that differ in the shade of the backlight; these nuances should be clarified separately.

The most advanced options are multi-colour and RGB backlighting. Multi-colour systems are called systems in which more than three colour options are provided, sometimes with intermediate shades. And RGB-backlight all...ows you to choose almost any shade at the request of the user; in addition, the possibility of synchronization (see "Illumination with effects") is found mainly in such systems, although single-colour keyboards can also be equipped with other effects.

Braided cable

The presence of a braid in the design of a regular keyboard cable.

Braided wire is more durable and reliable than unbraided cable: it is more difficult to damage, it resists sharp bends better. On the other hand, this feature affects the overall cost of the keyboard, and the mentioned advantages do not affect the main functionality of the model. So choosing a keyboard with a braid makes sense only if you are worried about the reliability of the wire, or if you plan to use it in adverse conditions, with frequent squeezing and bending.

Waterproof

Protecting the keyboard from spilling liquid on it. Most waterproof keyboards do not have a full-fledged sealed case and are designed to remain operational in the event of accidental contact with a relatively small amount of liquid (up to 200 mL) — for example, in the classic case of spilling coffee on the keyboard.

Metal structure

Keyboards whose body or certain elements are made of metal. This can be either the entire body or its parts - for example, a metal plate as a base for keys. Note that when it comes to the metal construction of the keyboard, the latter option is more common.

Compared to plastic—the most common keyboard case material—metal is much stronger, more durable, and more durable. It has a significant weight, but in this case it can also be written down as advantages — massiveness contributes to stability and reduces the likelihood that the keyboard will "fidget" under the fingers. In addition, metal cases look stylish and solid. On the other hand, they are noticeably more expensive than plastic ones, and the advantages mentioned are not so much practical as psychological. Therefore, this feature is found mainly in advanced gaming models (see "By Direction"), for which a solid appearance is no less important than functionality.
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