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

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.