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A4tech Bloody B865 Light Strike Optical Gaming Keyboard LK Red Switch

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  • Limited order quantity (1 peice per customer)


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  • 0.2ms Key Response - Innovative LK Optic Switch technology uses optical switches to react at lightning speed with extreme 0.2ms key response, exclusive "long-lasting" typing sound, and tactile feedback, creating more passion for gamers.
  • 25% Faster Keystroke - LK Optic Switch travel with a distance of 3mm, which is 25% faster than a traditional metal switch. (Traditional metal switch travel at a 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)
  • Exclusive "Long-Lasting" Typing Sound - LK Sound Creator Technology developed for “long-lasting” typing sound, while a regular switch uses metal friction to generate typing sound and tends to fade away after several months.
  • Ultra Durable, 100 Million Lifetime - LK Optic switch has a life span of over 100 million keystrokes. (Traditional metal switch tends to oxidize and wear out easily)
  • Ice Blue Backlit - Press Fn + F12 to adjust the lighting effects. Press Fn +“^ / ?” to adjust the light brightness.
  • 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 positions, ensuring the water flows out efficiently.
  • 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).



Connector USB
Key Response 0.2 ms
Key Style Optical Switch
Hotkey Multimedia Hotkey
Gaming Keycaps 8 ABS Keycaps
N-Key Rollover Full N-Key Rollover
Backlit Ice Blue
Backlit Brightness Adjustable
Cable Length 1.8 m
Key Life Up to 100 M Keystrokes
Space-Bar Screw Enhanced
System Requirements Windows 7/ 8 /8.1 / 10


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