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Compact black 75% gaming keyboard with dual control knobs and RGB lighting

Redragon SK90 75% Gaming Keyboard Tri-Mode 4000mAh 14 RGB Dual Knob

SKU CH-HFHZ-S5RZG

A compact 75% layout keyboard with tri-mode connectivity, dual media knobs, 14 RGB modes and a 4000mAh battery

  • MaterialPlastic
  • Keyboard InterfaceUSB
  • Design StyleGaming
  • Key SwitchTactile
  • Key Switch TypeTactile
  • Keyboard ColorBlack
  • Compact 75% layout saves desk space while keeping full functionality
  • Tri-mode connectivity via BT5.0, 2.4GHz dongle and USB-C wired
  • 4000mAh battery delivers extended use between charges
  • 14 RGB lighting modes with adjustable brightness for personalised visuals
  • Dual knobs control lighting, volume and playback without switching windows

Compact 75% Gaming Keyboard

The Redragon SK90 is a compact 75% gaming keyboard that saves desk space while keeping a number pad. It uses tactile membrane switches for quiet keystrokes suitable for both office work and gaming. The board is made of plastic with a black finish and includes a USB-C cable for wired use and charging.

Tri-Mode Connectivity with Dual Knobs

It suits users who want wireless flexibility across PC and Mac via BT5.0, 2.4G, or USB-C wired modes and appreciate dedicated media controls. The built-in 4000mAh battery supports long sessions without frequent recharging. Buyers who need mechanical switches, hot-swap sockets, or per-key RGB customisation should look elsewhere.

14 RGB Modes and 4000mAh Battery

The single specification that decides fit is the combination of 14 preset RGB backlighting modes with adjustable brightness and the 4000mAh rechargeable battery. If you require per-key lighting control or a larger 96% or 98% layout, this model will not meet those needs.

Highlights

  • Compact 75% layout saves desk space while keeping full functionality
  • Tri-mode connectivity via BT5.0, 2.4GHz dongle and USB-C wired
  • 4000mAh battery delivers extended use between charges
  • 14 RGB lighting modes with adjustable brightness for personalised visuals
  • Dual knobs control lighting, volume and playback without switching windows

Specifications

BrandRedragon
SeriesSK90
ModelSK90
MaterialPlastic
Keyboard InterfaceUSB
Design StyleGaming
Key SwitchTactile
Key Switch TypeTactile
Keyboard ColorBlack
TypeWired
Mouse InterfaceUSB
Tracking MethodTouch Scroll
Mouse ColorBlack
Power SourceLithium-ion Rechargeable Battery
Operating Timetrue
System Requirement1 USB Port
Featuresrgb, Plastic, Ambidextrous, USB-C
Package ContentsKeyboard*1, Manual*1, USB-C Cable*1

Questions about this item

Do I need a free USB-A port for the 2.4 GHz dongle if I want to use the SK90 wirelessly?

Yes, the 2.4 GHz wireless mode requires a USB-A port for its dongle; the USB-C cable is only for wired use and charging.

Will the SK90’s 75 % layout and tactile membrane switches feel different from a full-size mechanical board I already own?

The 75 % layout removes the dedicated number pad and some navigation keys, and the tactile membrane switches give a quieter, softer bottom-out than typical mechanical switches.

How can I confirm the 4000 mAh battery is charging and the tri-mode link is active after I plug in the USB-C cable?

The keyboard’s RGB lighting will show a charging indicator, and the connection mode LED will display the active link — wired, 2.4 GHz, or Bluetooth — so you can verify both power and connectivity at a glance.

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