A4tech B840 Bloody Full Light Strike Gaming Keyboard

Innovative LK optical switch technology uses optical detection that removes all input lag which is able to obtain zero digital latency reacting with a speed of 0.2ms key response.

• Light Strike Optical Technology
• LK Sound Creator Tech
• Key Response
• Neon Glare System
• 25% Faster Keystroke
• Ultra Durable

Innovative LK Optic Switch technology uses optic switch to react at lightning speed with extreme 0.2ms key response, exclusive "long-lasting" typing sound and tactile feedback, creates more passionate for gamers.

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

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

LK Sound Creator Technology developed for “long-lasting” typing sound, while regular switch uses metal friction to generate typing sound and tends to fade away after a several months.

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

The LK Optic Switch is surrounded by a 6mm barrier to prevent water damage from spill.

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

Dazzling backlit makes you stand out in the dark.

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).

Engineering for human ergonomics, ensures maximum comfort.

The 8 gaming non-slip silicon keycaps are designed for a longer comfort usage.

Space-Bar is made of dual screws + dual springs + balancing bar for best durability.

• Connector: USB
• Key Response: 0.2ms
• Key Style: Optic switch
• Hotkey: Multimedia hotkey
• Water-Resistant: Spill-resistant
• Backlit Brightness: Adjustable
• Gaming Keycaps: 8 Silicon keycaps
• Anti-ghosting Key: 100% Anti-ghosting key
• Backlit: Neon Glare
• Cable Length: 1.8 m
• Key Life: Up to 100 million keystrokes
• Space-Bar: Screw enhanced space-bar
• System Requirements: Windows XP/ Vista/ 7/ 8 /8.1 / 10 or later