This article covers Ducky One 3 Cosmic Blue Mini メカニカルキーボード RGB LED.

Overview

The Ducky One 3 Cosmic Blue Mini is a 60% mechanical keyboard from Taiwanese brand Ducky, combining a compact footprint with premium features like a hot-swappable PCB and layered sound dampening. Its eye-catching Cosmic Blue color scheme stands out on any desk, making it a favorite among enthusiasts who want both style and function. Equipped with Cherry MX Brown switches, it offers a tactile bump without a click—ideal for those who need feedback without disturbing coworkers or teammates. Connectivity is via a detachable USB-C cable, and per-key RGB lighting lets you customize the look without installing extra software.

Connectivity & Compatibility

The One 3 Cosmic Blue Mini uses a wired USB-C connection. The detachable braided cable is durable and easy to replace. It works with Windows, macOS, and Linux out of the box—no drivers needed. The keyboard includes DIP switches for adjusting certain key functions directly on the hardware. Because it's a 60% layout, there are no dedicated function keys, arrow keys, or numpad. All secondary functions are accessed via the Fn layer. The keyboard uses the US ANSI layout, so users accustomed to Japanese JIS layouts should be aware of the difference.

Product Info

Released in late 2022, the Ducky One 3 Cosmic Blue Mini sits in the mid-to-high tier of the mechanical keyboard market. It typically retails for around ¥23,000–¥25,000, offering excellent value for a fully hot-swappable 60% board. Warranty coverage depends on the retailer, but Ducky is known for reliable after-sales support. The package includes the keyboard, a USB-C cable, keycap puller, switch puller, and a quick-start guide. Its market positioning targets both beginners and intermediate enthusiasts who want to experiment with different switches without soldering.

Best Use Cases

Gamers who value desk space will appreciate the compact size—it leaves plenty of room for mouse movement, especially in FPS and MOBA games. The Cherry MX Brown switches provide a balanced feel for both gaming and typing, and the hot-swappable design allows easy customization. Office workers and writers will find the quiet, tactile typing experience comfortable for long sessions. The PBT double-shot keycaps resist shine and wear, maintaining a clean look over years of use. For mechanical keyboard newcomers, the One 3 Cosmic Blue Mini is an excellent entry point into the world of custom switches and layouts, offering premium build quality without breaking the bank.

Product Disclosure (Amazon)

  • Manufacturer: Ducky
  • Seller: azkcom （エイゼットケイドットコム）
  • Fulfilled by: azkcom （エイゼットケイドットコム）
  • ASIN: B0BTDHK4K7
  • Note: This article covers a manufacturer-made product based on Amazon listing details.