A4 Tech Bloody B820R Black USB Light Strike LK Optical Mechanical Gaming Keyboard
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Quick Overview Model - A4 Tech Bloody B820R Light Strike Type - Optical Mechanical Gaming Keyboard Interface - USB

4,980.00 ৳ 4980.0 BDT

4,980.00 ৳


A4 Tech Bloody B820R Light Strike

* Light Strike Optical Technology

* Self-Customize RGB

* Preloaded RGB Lighting

* Zero-Lag Response

* Linear and Smooth

* Ultra Durable


0.2ms Key Response

Innovative LK Optic Switch technology uses optic switch to react at lightning speed with extreme 0.2ms key response.


25% Faster Keystroke

LK Optic Switch travel with distance of 3mm, which is 25% faster than traditional metal switch. (Traditional metal switch travel at distance of 4mm)


Zero-Lag Response with Lightning Speed

LK Optic Switch reacts at lightning speed without lag. (Traditional Metal Switch delays 18~30ms due to metal bouncing)


Ultra Durable, 100 Million Lifetime

LK Optic switch has a life span of over 100 million key strokes. (Traditional metal switch tends to oxidize and wear out easily)


Self-Customize RGB Animation

Customize freely 3 types of RGB Animation modes with 16.8 million color options, making your own unique "Self-Customize" RGB.


Preloaded 6 RGB Lighting Effects

6 Types of lighting effects are preloaded in the keyboard by default. Adjust the lighting effects by pressing the "FN" keys with "F12" keys to rotate without driver.


Share The Customized RGB Animation

Store your favorite RGB Lighting Effects from FN+ 0 to 9. And you may share your newly created RGB Animation lighting effects with your friends or vise versa.


Gunmetal Aluminum Alloy Panel

Top panel made of aluminum alloy for a cutting-edge tech finish and provides stronger and more resistant to corrosion than common panel.


Full N-Key Rollover

Full NKRO ensures each keypress can simultaneously register regardless of how many keys are being pressed or held down at a time including modifier keys (Shift, Control and ALT)


Spill-Resistant Nano-Coating

Exclusive advanced Nano-coating over the PCB board, protect the PCB from corroding by wet air or caustic chemicals, prolonging your keyboard lifetime.


Smart Water Flow System

Both drainage channels and holes are set in precise position, ensuring the water flows out efficiently.



Bloody keyboards feature the unique design, high-quality precision and state-of-the-art technologies. Focusing on details, convenience and ergonomics makes it at the top. As the centerpiece to your gaming setup, Bloody keyboard is designed to deliver total satisfying control right to your finger-tips.




Model - A4 Tech Bloody B820R Light Strike, Type - Optical Mechanical Gaming Keyboard, Interface - USB, Language (English) - Yes, Dimensions (WxHxD) - 132.08 x 444.5 x 38.1mm, Weight - 1.08Kg, Warranty - 1 year, Specialty - The Worlds Fastest Mechanical Keyboard Switch 0.2 ms, 25% Faster Keystroke, Zero-Lag Response with Lightening Speed, Ultra Durable, 100 Million Lifetime, Self-Customize RGB Animation, Preloaded 6 RGB Lighting Effects, Share The Customized RGB Animation, Exclusive Long-Lasting Typing Sound, Gunmetal Aluminum Alloy Panel, Anti-Ghost Gaming Mode, Spill-Resistant Nano-Coating, Smart Water Flow System, Others - Color: Black, Connection: Wired, Connector: USB, Key Style: Blue switch, Key Response: 0.2ms, Anti-Ghosting Key: 100% Anti-ghosting key, Gaming Keycaps: 8 convex silicon keys, Hotkey: Multimedia Hotkey, Backlit: Customize RGB Animation, Backlit Brightness: Adjustable, Space-Bar: Screw enhanced space-bar, Memory Backlight: 6 Free driver RGB lighting modes, Key Lifetime: Up 100 million keystrokes, Raport Rate: 1000Hz/1ms

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" A4 Tech Bloody B820R Black USB Light Strike LK Optical Mechanical Gaming Keyboard "

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