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Compact black one-hand mechanical keyboard with 23 keys and blue LED backlight

Koolertron

Koolertron 23 Key One-Hand Gaming Keyboard (Blue Switch, Black)

SKU CH-B8PR-EW2A8

A compact, fully programmable 23-key mechanical keypad with four onboard profiles and blue LED backlighting

  • All 23 keys fully programmable via dedicated software
  • Four onboard profiles stored in built-in MCU
  • Ultra-compact 12.7 x 8.9 x 3 cm footprint
  • Removable USB cable for easy transport
  • Works alongside full-size 104/106/109 keyboards without interference

Fully Programmable 23-Key Layout

This compact one-hand keyboard offers 23 mechanical keys that can be freely programmed through dedicated software. Users can assign standard keystrokes, eight web navigation buttons, eight multimedia shortcuts, keyboard lock and Windows lock functions. The layout is designed for gamers, designers and video creators who need quick macro access alongside a full-size keyboard.

Four Onboard Profiles with RGB Backlight

Settings are stored in the built-in MCU across four layers, so configurations remain active when the keyboard is moved between computers without re-programming. Blue LED backlighting provides illumination for low-light use. The removable USB cable and 12.7 x 8.9 x 3 cm footprint make the unit easy to transport and allow it to sit beside a 104, 106 or 109-key keyboard without interference.

Plug-and-Play Installation

The keyboard functions as a standard USB HID device, so basic input works immediately on any modern operating system. Advanced macro editing requires the supplied software, which is Japanese-language only and cannot be changed. The hardware is built for 100 V Japanese mains specifications; users outside Japan should verify USB power compatibility before relying on the device for critical workflows.

Highlights

  • All 23 keys fully programmable via dedicated software
  • Four onboard profiles stored in built-in MCU
  • Ultra-compact 12.7 x 8.9 x 3 cm footprint
  • Removable USB cable for easy transport
  • Works alongside full-size 104/106/109 keyboards without interference

Specifications

No published specifications for this item yet.

Questions about this item

Do the blue mechanical switches need any lubrication or replacement after long use?

The blue switches are rated for tens of millions of actuations and need no scheduled lubrication; individual switches can be desoldered and swapped if one ever fails.

What is the first limitation you hit when holding keys down for extended macros?

The keyboard stores four profiles in its onboard MCU, so the limit is the number of layers rather than USB bandwidth or host software.

How much heat or noise does the board produce when the RGB backlight runs all day?

Blue LEDs draw very little power, so the case stays near room temperature and the only audible sound is the clicky switch actuation.

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