---
product_id: 410359387
title: "Cosmic Byte CB-GK-16 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Blue Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (Black)"
brand: "cosmic byte"
price: "€ 125.69"
currency: EUR
in_stock: true
reviews_count: 5
category: "Cosmic Byte"
url: https://www.desertcart.fr/products/410359387-cosmic-byte-cb-gk-16-firefly-tkl-mechanical-gaming-keyboard
store_origin: FR
region: France
---

# Per-key RGB with 18 customizable presets 1000Hz polling rate for ultra-responsive gaming 3-pin swappable Outemu Blue switches for tailored tactile feedback Cosmic Byte CB-GK-16 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Blue Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (Black)

**Brand:** cosmic byte
**Price:** € 125.69
**Availability:** ✅ In Stock

## Summary

> 🔥 Light up your game with precision and style! 🎮

## Quick Answers

- **What is this?** Cosmic Byte CB-GK-16 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Blue Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (Black) by cosmic byte
- **How much does it cost?** € 125.69 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/410359387-cosmic-byte-cb-gk-16-firefly-tkl-mechanical-gaming-keyboard)

## 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

- • **Switch It Up:** Easily swap Outemu Blue switches with 3-pin compatibility to fine-tune your typing or gaming feel.
- • **Sleek & Space-Savvy:** Compact TKL design frees up desk space without sacrificing performance or style.
- • **Ergonomic Excellence:** Contoured keycaps and adjustable fold-out legs deliver comfort for marathon work or play.
- • **Precision Meets Speed:** 1000Hz polling rate ensures every keystroke registers instantly, giving you the competitive edge.
- • **Vibrant Customization:** 18 dynamic RGB presets let you personalize your setup and stand out in every gaming session.

## Overview

The Cosmic Byte CB-GK-16 Firefly is a compact tenkeyless mechanical keyboard featuring customizable per-key RGB lighting with 18 presets, durable Outemu Blue switches with 3-pin swappability, and a 1000Hz polling rate for ultra-responsive input. Designed for both gaming and productivity, it offers ergonomic keycaps, adjustable typing angles, and a detachable USB-C cable, all packed into a sleek, space-saving form factor.

## Description

FEATURES COMPACT, PORTABLE, RGB BACKLIT Enhance your gaming experience with 18 preset configurations on mechanical keyboard and find a unique one to match your own system. OUTEMU SWITCHES The Firefly comes with customized Outemu Blue Mechanical switches to ensure and are equipped with optical sensors for precise gaming and comfortable typing. ANTI-GHOSTING Textured and contoured keycaps provide maximum grip and enhanced feel. No matter how fast your in-game actions are, every key press registers correctly. COMPACT PROJECTION The compact design of the Warlock Compact87 takes up minimum tablespace for a neater and cleaner workstation. ERGONOMIC DESIGN 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. Specifications Model Number: COSMIC BYTE CB-GK-16 Firefly Style: Mechanical RGB Gaming Keyboard Number of Keys :87 Switch Producer:Outemu Switch Lifetime:50Million Polling Rate (Hz):1000 Anti - Ghosting:Yes LED: FULL RGB Backlit Light Animations:11 Switch Color:Blue Multimedia Keys:12 Cable Length : 1.6m CableType:Braided Palm Rest Pad : No Keyboard Size:358x135x35mm Keyboard Weight: 990grams . Polling Rate (Hz): 1000

Review: Really impressed with the build and typing experience. The keys feel tactile and responsive, with a satisfying click that’s not too loud. The backlighting looks nice and adds to the overall look, especially at night. I’ve used it for both gaming and work, and it performs well in both cases. Feels durable and well-built. If you’re looking for a good mechanical keyboard without spending too much, this is a solid choice.
Review: It's a great keyboard with amazing build quality, nice lighting, and click feedback. Feels very stable even without any large mousepad due to its heavy weight (~800g) and decent grip at bottom. Switch and typing experience is good, the lighting presets are nice. Polling rate + anti ghosting = solid for gaming. All features are worth it if you are getting it for around 2200rs. But a few negatives.. The brightness of RGB is decent, not too bright. But still nice if you have a low light setup. And the switches feel too tight to remove with the puller. I have tried many times but they are just too tightly fitted to remove. Idk if it's with only my model although it's not necessary things so that's ok. Overall, it's perfect keyboard for the price. The negatives don't affect the usage of it so they aren't a major problem for me

## Features

- Enhance your gaming experience with 18 preset configurations on mechanical keyboard and find a unique one to match your own system.
- The Firefly comes with customized Outemu Blue Mechanical switches to ensure best quality and are equipped with optical sensors for precise gaming and comfortable typing.
- Textured and contoured keycaps provide maximum grip and enhanced feel. No matter how fast your in-game actions are, every key press registers correctly.
- The compact design of the keyboard takes up minimum tablespace for a neater and cleaner workstation.
- 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.
- Upgraded with Detachable USB C Cable

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08G1QVK9D |
| Are Batteries Included | No |
| Brand | Cosmic Byte |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,235) |
| Date First Available | 6 January 2021 |
| Hardware Platform | PC |
| Item Weight | 990 g |
| Item model number | CB-GK-16 |
| Manufacturer | Cosmic Byte |
| Operating System | Windows 10 |
| Power Source | USB power |
| Product Dimensions | 358 x 135 x 35 cm; 990 g |
| Series | Firefly |

## Product Details

- **Brand:** Cosmic Byte
- **Compatible devices:** PC
- **Connectivity technology:** USB
- **Keyboard description:** Gaming
- **Recommended uses for product:** Gaming

## Images

![Cosmic Byte CB-GK-16 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Blue Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (Black) - Image 1](https://m.media-amazon.com/images/I/61MtcaC55EL.jpg)
![Cosmic Byte CB-GK-16 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Blue Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (Black) - Image 2](https://m.media-amazon.com/images/I/71uvyaWUhdL.jpg)
![Cosmic Byte CB-GK-16 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Blue Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (Black) - Image 3](https://m.media-amazon.com/images/I/61lVdOKLYSL.jpg)
![Cosmic Byte CB-GK-16 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Blue Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (Black) - Image 4](https://m.media-amazon.com/images/I/71CxAmiOjjL.jpg)
![Cosmic Byte CB-GK-16 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Blue Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (Black) - Image 5](https://m.media-amazon.com/images/I/61sX+osJ57L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ Review
*by A***H on 26 July 2025*

Really impressed with the build and typing experience. The keys feel tactile and responsive, with a satisfying click that’s not too loud. The backlighting looks nice and adds to the overall look, especially at night. I’ve used it for both gaming and work, and it performs well in both cases. Feels durable and well-built. If you’re looking for a good mechanical keyboard without spending too much, this is a solid choice.

### ⭐⭐⭐⭐⭐ Review
*by A***G on 4 July 2025*

It's a great keyboard with amazing build quality, nice lighting, and click feedback. Feels very stable even without any large mousepad due to its heavy weight (~800g) and decent grip at bottom. Switch and typing experience is good, the lighting presets are nice. Polling rate + anti ghosting = solid for gaming. All features are worth it if you are getting it for around 2200rs. But a few negatives.. The brightness of RGB is decent, not too bright. But still nice if you have a low light setup. And the switches feel too tight to remove with the puller. I have tried many times but they are just too tightly fitted to remove. Idk if it's with only my model although it's not necessary things so that's ok. Overall, it's perfect keyboard for the price. The negatives don't affect the usage of it so they aren't a major problem for me

### ⭐⭐⭐⭐ Review
*by Z***N on 31 August 2021*

1) Pls note that the packaging of the product is significantly improved and it no more comes with a bad packaging (which was the case in 2020!). The product I recieved was in a neat and sturdy packaging. It was nicely covered with a box that had zero damage and the box was also contained in a bigger container(double box protection! Rest assured about the packaging, it was an issue in the past. 2) If you are coming from a membrane keyboard then the quality or build of the keyboard will definitely be a premium one for you. It has got quite a weight to it and hence feels quite a good built. But the braided cable feels a bit cheaper COMPARED TO OTHER BRAIDED CABLES. It is still good compared to normal rubber cables. 3) The keys are simply awesome. You will definitely get obsessed by typing on this keyboard. It simply feels great to type on it. The keys are quite loud and fully give the mechanical keyboard wala vibe that you need. I got so customed to this board that when i returned to my laptop keyboard it felt like its keys were inaudible(not kidding!). 4) Though rgb was not my first priority while buying this board.... but it too is just simply great! The colors are surprisingly vibrant and bright enough for most of us users. There are enough modes that one might need and you can even change the brightness of the rgb. If you need any more custom modes (if you are that much of a psycho xD) you can get it done through the CB software that the keyboard supports! 5) As mentioned RGB was not my first priority. I needed a compact ten key less mechanical keyboard which i needed for my college work and mostly for CODING! And .......... i am in love with this keyboard. The form factor is really very compact and it does not take much space from my desk and i can keep my board and write on my notebooks at the same time without any difficulty (which was one with my previous keyboard. I always needed to switch my keyboard and notebook from the desk very often and it irritated me alot). 6) One thing that i encountered was that my typing speed reduced while typing on this keyboard. I also made more errors while coding using this. I tend to mispress quite often and this is due to some anti ghosting keys that this board has. But its not quite that big of an issue and I will get accustomed to it with time imo! So, my final thoughts for buying the board would be that - if its your first mechanical keyboard .... JUST GO FOR IT. You wont be disappointed by the product. And if its not your first then too you wont notice any significant issues with the board and it will be just simply great for most of us!

## Frequently Bought Together

- Cosmic Byte CB-GK-16 Firefly Per-Key RGB TKL Mechanical Keyboard with Swappable Outemu Blue Switch, Macros, Software (Black)
- Logitech G102 Light Sync Gaming Mouse with Customizable RGB Lighting, 6 Programmable Buttons Light Weight (Black)
- Cosmic Byte Cyclone RGB Laptop Cooling Pad with 5 Fan, Adjustable Speed, USB Hub (Black/Blue)

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-03-04*