---
product_id: 543000133
title: "CB-GK-21 Themis 61 Key Mechanical Per Key RGB Gaming Keyboard with Outemu Blue Switches and Software (Black)"
brand: "cosmic byte"
price: "26713 kr"
currency: ISK
in_stock: true
reviews_count: 5
category: "Cosmic Byte"
url: https://www.desertcart.is/products/543000133-cb-gk-21-themis-61-key-mechanical-per-key-rgb
store_origin: IS
region: Iceland
---

# Per-key RGB with 10+ lighting modes Outemu Blue switches, 50M+ clicks durability 61 compact keys for max desk space CB-GK-21 Themis 61 Key Mechanical Per Key RGB Gaming Keyboard with Outemu Blue Switches and Software (Black)

**Brand:** cosmic byte
**Price:** 26713 kr
**Availability:** ✅ In Stock

## Summary

> 🌌 Elevate your desk game with Themis — where compact meets cosmic!

## Quick Answers

- **What is this?** CB-GK-21 Themis 61 Key Mechanical Per Key RGB Gaming Keyboard with Outemu Blue Switches and Software (Black) by cosmic byte
- **How much does it cost?** 26713 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/543000133-cb-gk-21-themis-61-key-mechanical-per-key-rgb)

## 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

- • **Space-Savvy 61-Key Layout:** Maximize your workspace without sacrificing functionality.
- • **Robust Double-Shot Keycaps:** Durable, fade-resistant keys that keep your setup looking fresh.
- • **Tactile Outemu Blue Switches:** Experience satisfying clicky feedback built to last 50 million keystrokes.
- • **Vibrant Per-Key RGB Lighting:** Customize your vibe with over 10 dazzling LED modes and software control.
- • **Ghosting-Free Simultaneous Key Presses:** Never miss a command during intense gaming or fast typing.

## Overview

The Cosmic Byte CB-GK-21 Themis is a sleek, 61-key mechanical keyboard featuring durable Outemu Blue switches rated for over 50 million keystrokes. Its injection molded double-shot keycaps ensure long-lasting vibrancy, while per-key RGB lighting with 10+ modes offers customizable aesthetics. Designed for gamers and professionals alike, it supports ghosting-free simultaneous key presses and connects via a reliable USB-C wired interface, making it a compact powerhouse for Windows and Mac users.

## Description

Features Compact Mechanical Keyboard. Blue Outemu Mechanical Key Switches. 61 keys Keyboard. 50 million + Operations for Each Key. Injection Molded Double-shot Color Keycaps. Simultaneous Operation for All Keys Without Any Key Ghosting Effects. Spectra RGB lighting effects, more than 10 LED lighting mode Win-Key Lock Windows Buttons can be disabled. Wired USB Connection for Laptops and PCs. Adjustable Backlight Brightness and Speed Software support to control Macros and customize RGB lights Specifications System: Windows, Mac Switch Life: OUTEMU 50 million times Number of Keys: 61keys US layout Product interface: USB C to USB A Cable: 1.5m Current consumption: max.200mA Size: 291 x 101 x 39mm Weight: 556g Technical Data Blue Switches Total stroke: 4.00mm Conducting stroke: 2.20±0.6mm Conducting strength: 50±10gf Tactile strength: 60±10gf Tactile stroke: 1.80mm Minimum triggering force: 30gf Min Termination strength: 65gf Max

Review: The positive's of this are: 1. The keys are tactile and responsive 2. Its very easy to clean 3. It feels quite durable. 4. Blue keys with very good sound. (Are very loud if use near to roommate/parents💀) 5. 10KL means less space, perfect for me in my gaming setup. My laptop already has all the other keys I would need. The negative points are: 1. There are no (flip) legs. 2. The keys are tightly secured to the keycaps and are somewhat difficult to remove if you don't have the correct tool and technique. 3. The backlight only shows up on the keys/numbers. The alternate key function (F1, F2, F3, etc) are printed with grey/white color, so unless you got direct light on the keyboard, they wont be visible with the backlight. 4. Little hard to find the shortcuts in the first few months, especially if you already had habit from another keyboard. If you get this KB for Rs 2300 or less, go for it. Its a good 10 keyless keyboard for gaming. If you are programmer or often use the keypad, then this is a poor choice of mechanical keyboard.
Review: What I like Looks : Very clean and nice looking keys. Possibly the best RGB in this price segment. The light shines through and it looks gorgeous. Feel : I was worried if it'll work for gaming and typing and it's safe to say it is amazing to do both. I fell in love with the clicky feel of the outemu blue variant and have been a typist since. Price: At the time I bought it, it was 1899. Around that price it is full value for money. What I dislike : Build: Don't get me wrong build quality is actually solid. But one con is that there is no adjustable pegs in the bottom to adjust height. Not for everyone, It is indeed a problem for me as I wished the keyboard was more inclined. RGB: As I said the RGB is lovely, but there is limited customisable options in the software. However the presets are beautiful and I honestly just leave it at that. You can personally paint your keyboard but cannot use any effects on them. Overall I am very happy with this purchase and would recommend it to anyone. Even with the cons I love the product and I assure you won't have buyers remorse.

## Features

- Injection Molded Double-shot Color Keycaps
- Simultaneous Operation for All Keys Without Any Key Ghosting Effects
- Software support to control Macros and customize RGB lights
- Wired USB C Connection for Laptops and PCs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09SH9PS1G |
| Brand | Cosmic Byte |
| Colour | Black |
| Customer Reviews | 4.1 4.1 out of 5 stars (474) |
| Date First Available | 26 Jan. 2023 |
| Guaranteed software updates until | unknown |
| Hardware Platform | PC |
| Item Weight | 556 g |
| Item model number | Themis |
| Manufacturer | Cosmic Byte |
| Operating System | Windows |
| Power Source | Wired |
| Product Dimensions | 29.1 x 10.1 x 3.9 cm; 556 g |
| Series | Themis |

## Product Details

- **Brand:** Cosmic Byte
- **Colour:** Black
- **Compatible devices:** Laptop, PC
- **Connectivity technology:** USB-C
- **Keyboard backlighting colour support:** RGB
- **Keyboard description:** Gaming
- **Product dimensions:** 29.1L x 10.1W x 3.9H centimetres
- **Recommended uses for product:** Gaming
- **Special feature:** Backlit, Ergonomic
- **Style:** Blue Switch

## Images

![CB-GK-21 Themis 61 Key Mechanical Per Key RGB Gaming Keyboard with Outemu Blue Switches and Software (Black) - Image 1](https://m.media-amazon.com/images/I/71utzsmU6qL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***H on 12 June 2024*

The positive's of this are: 1. The keys are tactile and responsive 2. Its very easy to clean 3. It feels quite durable. 4. Blue keys with very good sound. (Are very loud if use near to roommate/parents💀) 5. 10KL means less space, perfect for me in my gaming setup. My laptop already has all the other keys I would need. The negative points are: 1. There are no (flip) legs. 2. The keys are tightly secured to the keycaps and are somewhat difficult to remove if you don't have the correct tool and technique. 3. The backlight only shows up on the keys/numbers. The alternate key function (F1, F2, F3, etc) are printed with grey/white color, so unless you got direct light on the keyboard, they wont be visible with the backlight. 4. Little hard to find the shortcuts in the first few months, especially if you already had habit from another keyboard. If you get this KB for Rs 2300 or less, go for it. Its a good 10 keyless keyboard for gaming. If you are programmer or often use the keypad, then this is a poor choice of mechanical keyboard.

### ⭐⭐⭐⭐⭐ Review
*by A***R on 1 June 2023*

What I like Looks : Very clean and nice looking keys. Possibly the best RGB in this price segment. The light shines through and it looks gorgeous. Feel : I was worried if it'll work for gaming and typing and it's safe to say it is amazing to do both. I fell in love with the clicky feel of the outemu blue variant and have been a typist since. Price: At the time I bought it, it was 1899. Around that price it is full value for money. What I dislike : Build: Don't get me wrong build quality is actually solid. But one con is that there is no adjustable pegs in the bottom to adjust height. Not for everyone, It is indeed a problem for me as I wished the keyboard was more inclined. RGB: As I said the RGB is lovely, but there is limited customisable options in the software. However the presets are beautiful and I honestly just leave it at that. You can personally paint your keyboard but cannot use any effects on them. Overall I am very happy with this purchase and would recommend it to anyone. Even with the cons I love the product and I assure you won't have buyers remorse.

### ⭐⭐⭐⭐ Review
*by S***A on 31 August 2024*

I am writing this review after 2 year and 4 month of constant use. The plastic quality is decently nice and the wire quality is fabulous. The keyboard worked really good till 2 years in terms of literally everything. But from past 2.5 months approximately, i am facing issue with the keystrokes. The keyboard randomly types the letter more than one or twice especially during fast typing. From my experience i can surely say its due to the quality of mechanical switches used and not a software or driver problem. But overall great experience !!!

## Frequently Bought Together

- Cosmic Byte CB-GK-21 Themis 61 Key Mechanical Per Key RGB Gaming Keyboard with Outemu Blue Switches and Software (Black)
- Redragon M612 Predator RGB Gaming Mouse, 8000 DPI Wired Optical Gamer Mouse with 11 Programmable Buttons & 5 Backlit Modes, Software Supports DIY Keybinds Rapid Fire Button, White

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-01-23*