---
product_id: 510585137
title: "Cosmic Byte CB-GK-37 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Red Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (White)"
brand: "cosmic byte"
price: "₪228"
currency: ILS
in_stock: true
reviews_count: 7
category: "Cosmic Byte"
url: https://www.desertcart.co.il/products/510585137-cosmic-byte-cb-gk-37-firefly-tkl-mechanical-gaming-keyboard
store_origin: IL
region: Israel
---

# Per-key RGB lighting with 18 presets Detachable USB-C port for easy connectivity 3-pin hot-swappable Outemu Red switches Cosmic Byte CB-GK-37 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Red Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (White)

**Brand:** cosmic byte
**Price:** ₪228
**Availability:** ✅ In Stock

## Summary

> 🔥 Level up your desk game with Firefly’s customizable RGB & pro-grade switches!

## Quick Answers

- **What is this?** Cosmic Byte CB-GK-37 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Red Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (White) by cosmic byte
- **How much does it cost?** ₪228 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/510585137-cosmic-byte-cb-gk-37-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

- • **Future-Ready Connectivity:** Upgraded detachable USB-C cable offers durable, hassle-free plug & play for seamless portability.
- • **Compact & Ergonomic Design:** Space-saving TKL layout with contoured keycaps and adjustable feet for all-day comfort and precision.
- • **Effortless Switch Swapping:** Hot-swap your Outemu Red switches without soldering—upgrade or customize your typing feel anytime.
- • **Reliable Mechanical Performance:** Optical sensors ensure ultra-precise key registration for lightning-fast gaming and smooth typing.
- • **Vibrant Per-Key RGB Customization:** Express your unique style with 18 dynamic lighting presets that sync perfectly with your setup.

## Overview

The Cosmic Byte CB-GK-37 Firefly is a tenkeyless mechanical gaming keyboard featuring per-key RGB lighting with 18 presets, hot-swappable 3-pin Outemu Red switches for personalized tactile feedback, and an upgraded detachable USB-C port for enhanced connectivity. Its compact design with textured, contoured keycaps and adjustable feet delivers ergonomic comfort and precise key registration, making it ideal for both gaming and professional use.

## Description

Buy Cosmic Byte CB-GK-37 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Red Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (White) online at low price in India on desertcart.in. Check out Cosmic Byte CB-GK-37 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Red Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (White) reviews, ratings, features, specifications and browse more Cosmic Byte products online at best prices on desertcart.in.

Review: Very good quality mechanical keyboard for the price - 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₹.
Review: Good product but go for the newer one, they upgraded it now. - Good for the price, lasted me for 2 years, now i only have issue with W key and RGB behaving weird but for the price it was good back then but now you have better options and also its upgraded to hot swapable switches.

## 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 Red 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 | B0BTD484S1 |
| Best Sellers Rank | #1,625 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #24 in Gaming Keyboards |
| Brand | Cosmic Byte |
| Colour | White |
| Country of Origin | China |
| Customer Reviews | 4.4 4.4 out of 5 stars (6,668) |
| Date First Available | 29 January 2023 |
| Generic Name | Mechanical Keyboard |
| Hardware Platform | PC |
| Importer | Cosmic Byte, Prakash Warehousing, S. No.163, Hissa No 1-2-3-4-5A-5B/2/1, , Phursungi, Pune 412308, Maharashtra, India |
| Included Components | USB Cable |
| Item Dimensions LxWxH | 35.8 x 13.5 x 3.5 Centimeters |
| Item Height | 35 Millimeters |
| Item Weight | 990 g |
| Item Width | 13.5 Centimeters |
| Item model number | Firefly |
| Manufacturer | Cosmic Byte |
| Net Quantity | 1.00 Count |
| Operating System | Windows 10 |
| Packer | Cosmic Byte, Prakash Warehousing, S. No.163, Hissa No 1-2-3-4-5A-5B/2/1, , Phursungi, Pune 412308, Maharashtra, India |
| Product Dimensions | 35.8 x 13.5 x 3.5 cm; 990 g |
| Series | Firefly |

## Product Details

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

## Images

![Cosmic Byte CB-GK-37 Firefly TKL Mechanical Gaming Keyboard | Per-Key RGB | 3 PIN Swappable Outemu Red Switches | Upgraded with Detachable USB-C Port | Macro & Software Support (White) - Image 1](https://m.media-amazon.com/images/I/51s42EUg5EL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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₹.

### ⭐⭐⭐⭐ Good product but go for the newer one, they upgraded it now.
*by N***T on 17 September 2025*

Good for the price, lasted me for 2 years, now i only have issue with W key and RGB behaving weird but for the price it was good back then but now you have better options and also its upgraded to hot swapable switches.

### ⭐⭐⭐⭐⭐ 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 day Couple 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.

## Frequently Bought Together

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-01-29*