---
product_id: 389847093
title: "Keychron K3 Ultra-Slim 75% ISO-UK-Layout Wireless Bluetooth/Wired USB Mechanical Keyboard,84 Keys Hot Swappable Low-Profile Optical Brown Switch White LED Backlit for Mac Windows-Version 2"
brand: "keychron"
price: "HK$1957"
currency: HKD
in_stock: true
reviews_count: 8
category: "Keychron"
url: https://www.desertcart.hk/products/389847093-keychron-k3-ultra-slim-75-iso-uk-layout-wireless-bluetooth
store_origin: HK
region: Hong Kong
---

# Bluetooth 5.1 multi-device connectivity 84 hot-swappable optical switches 75% ultra-slim layout Keychron K3 Ultra-Slim 75% ISO-UK-Layout Wireless Bluetooth/Wired USB Mechanical Keyboard,84 Keys Hot Swappable Low-Profile Optical Brown Switch White LED Backlit for Mac Windows-Version 2

**Brand:** keychron
**Price:** HK$1957
**Availability:** ✅ In Stock

## Summary

> ⌨️ Elevate your typing game with ultra-slim precision and seamless multi-device flow!

## Quick Answers

- **What is this?** Keychron K3 Ultra-Slim 75% ISO-UK-Layout Wireless Bluetooth/Wired USB Mechanical Keyboard,84 Keys Hot Swappable Low-Profile Optical Brown Switch White LED Backlit for Mac Windows-Version 2 by keychron
- **How much does it cost?** HK$1957 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/389847093-keychron-k3-ultra-slim-75-iso-uk-layout-wireless-bluetooth)

## Best For

- keychron enthusiasts

## Why This Product

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

## Key Features

- • **Sleek 75% Ultra-Slim Design:** Maximize desk space with a compact, stylish keyboard that fits your modern workspace aesthetic.
- • **Seamless Multi-Device Bluetooth 5.1:** Switch between up to 3 devices instantly—perfect for multitasking across Mac, Windows, tablets, and phones.
- • **Mac & Windows Ready with Dual Keycaps:** Flawlessly switch OS modes with included keycaps and dedicated multimedia keys tailored for both systems.
- • **Hot-Swappable Low-Profile Optical Switches:** Customize your tactile experience effortlessly—no soldering required, just swap and play.
- • **Durable Aluminum Frame & Lightning-Fast Response:** Experience premium build quality with a reinforced aluminum body and ultra-responsive 40% slimmer optical switches.

## Overview

The Keychron K3 is a cutting-edge 75% ultra-slim mechanical keyboard featuring 84 hot-swappable low-profile optical switches, Bluetooth 5.1 connectivity for up to 3 devices, and wired USB-C support. Designed for Mac and Windows users, it includes dual keycaps and multimedia keys, housed in a durable aluminum frame. Its low-profile optical switches offer faster input with a 70 million keystroke lifespan, making it a sleek, versatile choice for professionals seeking a premium typing experience.

## Description

Compact 75% layout keyboard with 84 hot-swappable low-profile optical switches, Bluetooth 5.1 connectivity, and wired USB-C for seamless multi-device use.

Review: Lovely keyboard - Loving this keyboard for programming. The optical blue switches are clicky and responsive - great for typing. Solid build quality, very good Bluetooth multi-device support, and wired mode if needed. The lighting looks great and can be customised or turned off. Comes with keycaps for both Mac and Windows. Very pleased overall.
Review: Nice keyboard but returned - I bought this keyboard after many months of research and trialing different mechanicals. I really wanted a mechanical keyboard but found they were a little too clunky and big, so opted for this Keychron low profile option for the best of both worlds. Having previously used the Logitech MX Master, it was a tough act to follow for this Keychron K3. Overall I enjoyed the typing experience and the aesthetics of the board are awesome, but I had some issues when connecting to my PC via Bluetooth (there is a good 5 second delay before it recognises the keyboard when it goes to sleep, which did get annoying), and some of the keys started to repeat type and get “stuck” after a couple of weeks use, meaning I wasn’t happy with the experience compared to my Logitech board and so ended up returning. You can swap the keys but I found it difficult to find low profile keycaps that would fit the board, and the switches felt much more flimsy compared to the standard MX Cherry style switches on a full size keyboard. I liked that it comes with the option to have Mac or Windows buttons, I use both so this is a good edition, and you can change the colours on the keycaps too for a few of the keys between the grey and orange options. Overall this keyboard had a good typing experience but with the issues I had, I wouldn’t recommend a purchase given the price.

## Features

- Keychron K3, a compact 75% layout 84 keys hot-swappable ultra-slim wireless mechanical keyboard (Exclusive color scheme) built for peak productivity, a great tactile typing experience. Personalize per-key typing experience without soldering, and let you personalize per-key typing experience without soldering.
- Be ready to multitask without missing a beat by connecting the K3 with up to 3 devices via the stable Bluetooth 5.1 chipset and switch between your laptop, PC, tablet and phone seamlessly. It also has wired mode with USB Type-C connection.
- With a unique Mac layout, the K3 has all the necessary Mac multimedia keys while still being compatible with Windows. Extra keycaps for both Windows and Mac operating systems are included.
- The redesigned low-profile Keychron optical switch is 40% slimmer than conventional switches with a shorter travel distance that triggers an input faster than ever. With the reinforced aluminum body (plastic bottom frame) make the K3 one of the thinnest and lightweight mechanical keyboards on the market.
- You can easily hot-swap every low-profile optical switch without soldering to customize your typing experience on the K3 (*This keyboard is NOT compatible with any conventional MX style mechanical switch). The pre-installed low-profile optical red switch provides unrivaled tactile responsiveness with up to 70 million keystroke lifespan, and it supports NKRO on the wired mode or 6KRO on the wireless mode.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09K3Z51KP |
| Are Batteries Included | Yes |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | 18,554 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 279 in Keyboards (Computers & Accessories) |
| Brand | Keychron |
| Colour | Brown Swich |
| Customer Reviews | 4.0 4.0 out of 5 stars (104) |
| Date First Available | 22 Oct. 2021 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Guaranteed software updates until | unknown |
| Item Weight | 798 g |
| Item model number | K3 |
| Lithium Battery Energy Content | 15 Watt Hours |
| Lithium Battery Packaging | Batteries contained in equipment |
| Manufacturer | Keychron |
| Number Of Lithium Ion Cells | 1 |
| Number of Batteries | 1 |
| Operating System | Mac,Windows |
| Power Source | Powered by electric cable |
| Product Dimensions | 30.6 x 11.6 x 2.2 cm; 798 g |
| Series | Keychron K3 UltraSlim |

## Product Details

- **Brand:** Keychron
- **Colour:** Brown Swich
- **Compatible devices:** Smartphone
- **Connectivity technology:** Bluetooth, USB
- **Keyboard backlighting colour support:** Single Color
- **Keyboard description:** Mechanical
- **Product dimensions:** 30.6L x 11.6W x 2.2H centimetres
- **Recommended uses for product:** Student
- **Special feature:** Lightweight,Wireless,Travel
- **Style:** Modern

## Images

![Keychron K3 Ultra-Slim 75% ISO-UK-Layout Wireless Bluetooth/Wired USB Mechanical Keyboard,84 Keys Hot Swappable Low-Profile Optical Brown Switch White LED Backlit for Mac Windows-Version 2 - Image 1](https://m.media-amazon.com/images/I/41subFCWmRL.jpg)
![Keychron K3 Ultra-Slim 75% ISO-UK-Layout Wireless Bluetooth/Wired USB Mechanical Keyboard,84 Keys Hot Swappable Low-Profile Optical Brown Switch White LED Backlit for Mac Windows-Version 2 - Image 2](https://m.media-amazon.com/images/I/619RA80askL.jpg)
![Keychron K3 Ultra-Slim 75% ISO-UK-Layout Wireless Bluetooth/Wired USB Mechanical Keyboard,84 Keys Hot Swappable Low-Profile Optical Brown Switch White LED Backlit for Mac Windows-Version 2 - Image 3](https://m.media-amazon.com/images/I/61BjXG07xGL.jpg)
![Keychron K3 Ultra-Slim 75% ISO-UK-Layout Wireless Bluetooth/Wired USB Mechanical Keyboard,84 Keys Hot Swappable Low-Profile Optical Brown Switch White LED Backlit for Mac Windows-Version 2 - Image 4](https://m.media-amazon.com/images/I/61MaHQHg0qL.jpg)
![Keychron K3 Ultra-Slim 75% ISO-UK-Layout Wireless Bluetooth/Wired USB Mechanical Keyboard,84 Keys Hot Swappable Low-Profile Optical Brown Switch White LED Backlit for Mac Windows-Version 2 - Image 5](https://m.media-amazon.com/images/I/61ulaAj-epL.jpg)

## Questions & Answers

**Q: why is there no alt key added on default?**
A: The K3 comes in a Mac layout with Command and Option keys, included are addition Windows, Alt and other keycaps to convert it to a PC layout.

**Q: U can switch between device like android and pc?**
A: Yes, you can connect via Bluetooth to your PC on button 1 and your phone on button 2, then just press Fn+1 to type on your PC and Fn+2 to type on your phone.

**Q: Can it connect to Xbox series s/x**
A: I have tried cabled connection and it was working but never tried Bluetooth connection.

**Q: Can i convert from the qwerty layout to the colemak or dvorak layout with this keyboard?**
A: You replace keycaps for your desired layout but you can not program the keyboard. But You can change this from OS itself.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Lovely keyboard
*by L***I on 15 July 2025*

Loving this keyboard for programming. The optical blue switches are clicky and responsive - great for typing. Solid build quality, very good Bluetooth multi-device support, and wired mode if needed. The lighting looks great and can be customised or turned off. Comes with keycaps for both Mac and Windows. Very pleased overall.

### ⭐⭐⭐⭐ Nice keyboard but returned
*by N***N on 27 September 2023*

I bought this keyboard after many months of research and trialing different mechanicals. I really wanted a mechanical keyboard but found they were a little too clunky and big, so opted for this Keychron low profile option for the best of both worlds. Having previously used the Logitech MX Master, it was a tough act to follow for this Keychron K3. Overall I enjoyed the typing experience and the aesthetics of the board are awesome, but I had some issues when connecting to my PC via Bluetooth (there is a good 5 second delay before it recognises the keyboard when it goes to sleep, which did get annoying), and some of the keys started to repeat type and get “stuck” after a couple of weeks use, meaning I wasn’t happy with the experience compared to my Logitech board and so ended up returning. You can swap the keys but I found it difficult to find low profile keycaps that would fit the board, and the switches felt much more flimsy compared to the standard MX Cherry style switches on a full size keyboard. I liked that it comes with the option to have Mac or Windows buttons, I use both so this is a good edition, and you can change the colours on the keycaps too for a few of the keys between the grey and orange options. Overall this keyboard had a good typing experience but with the issues I had, I wouldn’t recommend a purchase given the price.

### ⭐⭐⭐⭐⭐ Great keyboard for a great price
*by I***A on 5 May 2022*

This is my first mechanical keyboard and honestly it's great. It's lightweight, looks good and does everything that it says it does. I got the brown switches and they're not too loud whilst also still providing that nice clicky sound and feeling. The backlight works well and has many different modes to choose from. The title says it's the UK layout and whilst the pictures don't show it, it is infact the UK layout. The box comes with extra key caps so you can change it to match your system and typing layout (it comes in american MAC key layout by default but has the windows keycaps as well as other extra keys and a guide telling you where to put what). It also comes with a dust protector which is very useful for me as my room gets dusty. Overall solid product and would recommend. 100% worth the money.

## Frequently Bought Together

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-30*