I can not get the breathing mode to activate anymore. Does anyone know what might have happened? I can use fn + pg up/down to control the brightness.

Breathing mode on mine never worked.

What key will make the lights stay on? windows 10 system

Function and 5 will set the keys to one color

Whats the warranty on this thing, bought it a couple months ago and took it out the box 4days ago and the rgb has already stopped working

I have no idea. If it broke that fast, contact AMAZON and send it back.

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🌩️ RedThunder K900: Strike your keys with power and style!

CUSTOMIZABLE RGB MASTERY - Illuminate your setup with 42 vibrant color combos across 6 zones—no drivers needed, just pure plug & play.
GAME READY ANTI GHOSTING - Press up to 25 keys simultaneously with zero input lag—dominate every game without a miss.
SEMI MECHANICAL PRECISION - Experience the perfect blend of tactile feedback and whisper-quiet typing with 60 million keystroke-tested switches.
ERGONOMIC POWERHOUSE DESIGN - Integrated wrist rest and phone holder crafted into a sleek, pistol-inspired frame for ultimate desktop stability and style.
UNIVERSAL COMPATIBILITY EASE - Plug & play across Windows, Mac, Linux, and consoles—no drivers, no hassle, just instant productivity.

The RedThunder K900 is a semi-mechanical RGB backlit gaming keyboard combining durable 60 million keystroke switches with customizable 42-color lighting zones. Featuring 25 anti-ghosting keys, an ergonomic wrist rest, and a unique pistol-inspired design, it offers a quiet yet tactile typing experience. Compatible with PC, Mac, Linux, and PS4, it’s a plug-and-play powerhouse built for gamers and professionals seeking precision and style.

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TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Brand	RedThunder
Series	K900
Item model number	K900
Hardware Platform	PC
Operating System	Mac
Item Weight	2.64 pounds
Product Dimensions	19.6 x 7.8 x 1.7 inches
Item Dimensions LxWxH	19.6 x 7.8 x 1.7 inches
Color	Semi-mechanical(RGB)
Power Source	Corded Electric
Manufacturer	RedThunder
ASIN	B07DG821CQ
Is Discontinued By Manufacturer	No
Date First Available	May 14, 2018

RedThunder K900 Gaming Keyboard, RGB Backlit Semi-Mechanical with Wrist Rest, Water-Resistant USB Wired Hybrid Ergonomic, Teclado Gamer for Desktop Computer PC Mac PS4

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