---
product_id: 511857462
title: "Cosmic Byte CB-GK-34 Firefly Hot Swappable Per-Key RGB Ten-Keyless Keyboard with Outemu Red Switch, Macros, Software (Black)"
brand: "cosmic byte"
price: "HK$156"
currency: HKD
in_stock: false
reviews_count: 4
url: https://www.desertcart.hk/products/511857462-cosmic-byte-cb-gk-34-firefly-hot-swappable-per-key
store_origin: HK
region: Hong Kong
---

# Per-key RGB with 16.8M colors for vibrant personalization Hot-swappable switches for ultimate customization Outemu Red switches with next-gen sensors for precision Cosmic Byte CB-GK-34 Firefly Hot Swappable Per-Key RGB Ten-Keyless Keyboard with Outemu Red Switch, Macros, Software (Black)

**Brand:** cosmic byte
**Price:** HK$156
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Light up your desk, level up your game! 🌈

## Quick Answers

- **What is this?** Cosmic Byte CB-GK-34 Firefly Hot Swappable Per-Key RGB Ten-Keyless Keyboard with Outemu Red Switch, Macros, Software (Black) by cosmic byte
- **How much does it cost?** HK$156 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/511857462-cosmic-byte-cb-gk-34-firefly-hot-swappable-per-key)

## Best For

- cosmic byte enthusiasts

## Why This Product

- Trusted cosmic byte brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ergonomic Edge ✨:** Backward and forward-leaning keycaps plus fold-out legs let you dial in your perfect typing angle.
- • **Swap on the Fly ⚙️:** Easily switch between Cherry MX, Gateron, Kailh, Outemu & more with hot-swappable 3/5-pin compatibility.
- • **Light Up Your Workspace 🌈:** Customize every key with 16.8 million RGB colors, controlled instantly via software or on-the-fly shortcuts.
- • **Ready for Macro Mastery 🎯:** Assign complex macros and functions effortlessly through intuitive Windows software for productivity and gaming dominance.
- • **Precision Meets Comfort 🖱️:** Outemu Red mechanical switches deliver smooth, silent keystrokes with next-gen sensors for gaming accuracy.

## Overview

The Cosmic Byte CB-GK-34 Firefly is a sleek tenkeyless mechanical keyboard featuring hot-swappable Outemu Red switches compatible with multiple 3/5-pin switch types. It offers per-key RGB lighting with 16.8 million colors, ergonomic keycap design, and customizable macros via dedicated software—perfect for professionals and gamers seeking precision, comfort, and style.

## Description

Full description not available

## Features

- Hot Swappable Keyboard- The CB-GK-34 Firefly is Hot swappable and supports swapping to other switches from Cherry Mx, Gateron, Kailh, Outemu or any other 3PIN/5PIN switches
- The CB-GK-34 Firefly comes with Outemu Red Mechanical switches to ensure best quality and are equipped with next gen sensors for precise gaming and comfortable typing.
- Textured and contoured keycaps provide maximum grip and enhanced feel.
- Software Support- The Keyboard supports Per Key RGB with 16.8 million colours for each individual key customisable on the fly or through the Windows Software. Also assign functions and macros to the keys using software
- With keycaps leaning backward and forward design to make the typing more comfortable, the fold-out legs allows you to choose the best typing height.
- Keycap and Switch Puller in Included in the Package

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Cosmic Byte |
| Manufacturer | Cosmic Byte, Cosmic Byte, Prakash Warehousing, S. No.163, Hissa No 1-2-3-4-5A-5B/2/1, Phursungi, Pune 412308, Maharashtra, India |
| Series | Firefly |
| Colour | Black- Hot Swappable |
| Item Height | 35 Millimeters |
| Item Width | 13.5 Centimeters |
| Product Dimensions | 35.8 x 13.5 x 3.5 cm; 940 g |
| Item model number | Firefly |
| Hardware Platform | Laptop, PC |
| Operating System | Windows |
| Are Batteries Included | No |
| Included Components | Keycap Puller |
| Manufacturer | Cosmic Byte |
| Item Weight | 940 g |

## Product Details

- **Brand:** Cosmic Byte
- **Compatible Devices:** PC
- **Connectivity Technology:** USB-A
- **Keyboard Description:** Gaming
- **Recommended Uses For Product:** Office, Gaming

## Images

![Cosmic Byte CB-GK-34 Firefly Hot Swappable Per-Key RGB Ten-Keyless Keyboard with Outemu Red Switch, Macros, Software (Black) - Image 1](https://m.media-amazon.com/images/I/71+MnjtkHZL.jpg)
![Cosmic Byte CB-GK-34 Firefly Hot Swappable Per-Key RGB Ten-Keyless Keyboard with Outemu Red Switch, Macros, Software (Black) - Image 2](https://m.media-amazon.com/images/I/61gh5RFyW0L.jpg)
![Cosmic Byte CB-GK-34 Firefly Hot Swappable Per-Key RGB Ten-Keyless Keyboard with Outemu Red Switch, Macros, Software (Black) - Image 3](https://m.media-amazon.com/images/I/61CXemDXcoL.jpg)
![Cosmic Byte CB-GK-34 Firefly Hot Swappable Per-Key RGB Ten-Keyless Keyboard with Outemu Red Switch, Macros, Software (Black) - Image 4](https://m.media-amazon.com/images/I/61Hp1RbZz6L.jpg)
![Cosmic Byte CB-GK-34 Firefly Hot Swappable Per-Key RGB Ten-Keyless Keyboard with Outemu Red Switch, Macros, Software (Black) - Image 5](https://m.media-amazon.com/images/I/71P57tcBmYL.jpg)

## Available Options

This product comes in different **Pattern, Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ bang for the buck
*by Y***I on 12 April 2025*

I’ve been using the Cosmic Byte Firefly CB-GK-16 (Blue switch variant) for about 2 months now. Honestly, I didn’t expect this level of quality for the price.The build feels sturdy, with a metal top plate that gives it some good weight doesn’t slide around. The switches are Outemu Blues, so yeah, they’re clicky and loud. If you’re into that tactile typing feel, you’ll love it. Typing feels satisfying, and key response is crisp. Definitely not silent though, so maybe not the best for shared rooms or late-night use unless your roommates are cool with it.The RGB lighting is bright and clean. Tons of modes to cycle through using the keyboard shortcuts, even if the software isn't the most polished.It’s tenkeyless, which is perfect for my setup. Saves space without sacrificing comfort or usability. I use it for both work and gaming (Valorant, Apex), and it holds up really well. Nothing has gone wrong till this dayCouple of small things:The keycaps are decent, but don’t expect premium material. They're fine for daily use though.Blue switches are loud not a downside for me, but something to be aware of.

### ⭐⭐⭐⭐ Great build, responsive switches, but custom RGB switching is limited
*by G***H on 20 May 2025*

I've been using the Cosmic Byte CB-GK-18 Firefly mechanical keyboard for over a week now, and overall, it's an excellent piece of hardware. The build quality is solid, the key response is great, and the per-key RGB customization through the Windows software is great — especially at this price point.However, there's one major limitation that Linux users (like me) should be aware of:While you can define a custom per-key RGB layout and save it to the keyboard's memory using the Windows app, there is no keyboard shortcut to recall this custom mode once you switch to one of the preset lighting effects using Fn + Insert or similar function key combos. You’ll need to reopen the Windows app each time you want to restore your custom lighting — which is very inconvenient if you're primarily on Mac/Linux.If Cosmic Byte adds the ability to assign a shortcut to toggle back to the user-defined RGB profile or lets users set it as the default on startup, this would easily be a 5-star product.Pros:1. Excellent build quality and design2. Smooth, responsive mechanical switches3. Fully customizable per-key RGB (via Windows software)4. Onboard memory saves lighting profilesCons:1. No keyboard shortcut to return to custom RGB lighting once switched2. Software is Windows-only; not ideal for Linux usersVerdict:Highly recommended for Windows users who want custom RGB control. If you're on Linux, be aware of the current limitations and plan accordingly.

### ⭐⭐⭐⭐⭐ Very good quality mechanical keyboard for the price
*by A***N on 3 April 2024*

The Cosmic Byte Firefly is a very good keyboard indeed.Pros-*Build quality- It is a very solid and well built device with the top part in steel and the bottom part in plastic. It is pretty heavy but it is a mechanical keyboard so no surprises there.*Accuracy- The keyboard is very accurate for typing.*RGB-RGB is definitely very good. It has a selection of many single colors and mixed ones too.*Hot-swappable keys- The keyboard has hot swappable keys which means that the switch itself can be replaced with other Outemu switches. I'm not sure if other brands switches can be used.Cons-*Typing sound- If you are going to buy this keyboard and type a lot, do not buy the blue switch version. I really underestimated the sounds of the blue switch. It sounds like an actual typewriter. It is pretty much annoying as it is making too much noise. The red switch version can be better if you type a lot as it is more quiet. Also, other people may find it disturbing. So buy blue switches only if you have a separate room.*Dedicated Caps lock indicator-It actually does Caps lock and scroll lock indicators in the keys itself, but it is not visible if the RGB color is white as the indicator colors are also white which can be confusing. So I would suggest Cosmic Byte to put dedicated Caps lock and Scroll lock indicators.*Portability- The keyboard is huge and heavy which makes it pretty hard to carry it around.The packaging they sent the keyboard in was very good. It came in a cardboard box inside a sealed bag.Overall a very good keyboard for 2000-2500₹.

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-26*