# Keychron K4 QMK Keyboard Universal USB RF Wireless Bluetooth Black 96%

**URL:** https://aio.lv/en/product--keychron-k4x-j1z-bo--11631051
**Data updated:** 2026-02-26 18:06 (EET)
**Category:** Keyboards
**Manufacturer:** Keychron
**Manufacturer code:** K4X-J1Z-BO
**EAN:** 4894979024923
**Warranty:** 1 Year
**Availability:** Available for order
**Price:** 147.99 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 122.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--keychron-k4x-j1z-bo--11631051

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

The Keychron K4 QMK is a 96% keyboard featuring USB, RF Wireless, and Bluetooth connectivity. It utilizes magnetic-mechanical key switches and offers RGB LED backlighting, making it suitable for universal use. The sleek black design enhances any workspace.

## Long description

The Keychron K4 Version 3 ISO Layout is a QMK-capable 96% mechanical keyboard offering both Bluetooth 5.2 and wired USB Type-C connections. This ISO collection includes UK, German, Swiss and Nordic key layouts, plus extra keycaps for Mac and Windows. The keyboard features hot-swappable MX-style switch sockets, pre-lubed Keychron Super switches (red, brown, banana) with a 50M click lifespan, north-facing RGB lighting with shine-through Cherry-profile PC keycaps, and enhanced internal acoustic foams for a quieter, more stable typing experience. It also supports extensive customization through the QMK firmware and the web-based Keychron Launcher configurator.
Advantages
The K4 Version 3 combines versatile connectivity (Broadcom Bluetooth 5.2 for up to three devices and a reliable USB-C wired mode) with QMK programmability for full key remapping, macros and multiple keymaps for macOS and Windows. Enhanced IXPE, EPDM and PET acoustic foams improve sound and feel, while the ARM MCU with 256KB flash and a 1000 Hz polling rate delivers responsive performance. Hot-swappable PCB sockets and pre-lubed switches let users tailor typing feel without soldering, and the Keychron Launcher web app allows online configuration across major operating systems and browsers.
Suitable for
Office productivity across macOS, Windows and Linux
Multitasking between laptop, phone and tablet via Bluetooth
Custom keyboard layouts, macros and firmware tinkering with QMK
Competitive gaming requiring low latency (1000 Hz polling)
Users who prefer hot-swappable mechanical switches and customizable typing feel
Key specifications
Layout: 96% ISO (UK / DE / CH / Nordic variants)
Connectivity: Bluetooth 5.2 (Broadcom, up to 3 devices) and USB Type-C wired
Firmware: QMK-compatible; configurable via Keychron Launcher web app
Switches: Hot-swappable MX-style sockets; Keychron Super switches (pre-lubed) available in Red, Brown, Banana; 50M click lifespan
Lighting: North-facing RGB, shine-through Cherry-profile PC keycaps, \>22 backlight modes
Internal: IXPE, EPDM and PET acoustic foams; added weight for stability
Controller: ARM MCU with 256KB Flash; 1000 Hz polling rate
Ergonomics: 3 adjustable typing angles (5°, 8°, 11°)
Colour: Black
MPN / EAN: K4X-J1Z-BO / 4894979024923
How to use
Connect the Keychron K4 Version 3 via Bluetooth 5.2 to one or up to three devices for wireless use, or plug in the USB Type-C cable for a wired connection. Use the Keychron Launcher web app in any supported browser to program keymaps, record macros and set layers; changes are stored to the QMK firmware. To change switches, remove keycaps and pull out the switch from the hot-swap socket, then insert a compatible 3-pin or 5-pin MX-style switch. Use the included Mac and Windows keycaps to match your operating system layout.
Usage recommendations
For quieter and more consistent acoustics, allow new pre-lubed switches a short break-in period and consider using the supplied tray or a damp surface while assembling. When programming complex macros or installing new keymaps, save configurations through Keychron Launcher and test on both macOS and Windows if you switch between systems frequently.

## Specifications

### Keyboard

| Feature | Value |
|---|---|
| Device interface | USB + RF Wireless + Bluetooth |
| Keyboard form factor | 96% |
| Keyboard language | Nordic |
| Numeric keypad | Yes |
| Bluetooth version | 5.2 |
| Connectivity technology | Wired & Wireless |
| Recommended usage | Universal |
| Built-in memory | Yes |
| Built-in memory capacity | 256 KB |
| Polling rate | 1000, 125 |
| Rollover | N-key rollover |
| Keyboard keys operating life | 150 million characters |
| Multi-device support | Yes |
| Physical layout | ISO |
| Keycaps | Double shot |
| Keycaps material | Polybutylene terephthalate (PBT) |

### Mouse

| Feature | Value |
|---|---|
| Mouse included | No |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Material | Wood, Acrylonitrile Butadiene Styrene (ABS), Aluminium |
| Backlight colour | Multicolour |
| Backlight | Yes |
| Backlight type | RGB LED |
| Surface coloration | Monochromatic |
| Adjustable backlight | Yes |
| Keyboard style | Straight |

### Weight & dimensions

| Feature | Value |
|---|---|
| Keyboard dimensions (WxDxH) | 373.2 x 126.2 x 40.2 |
| Keyboard weight | 970.8 g |

### Power

| Feature | Value |
|---|---|
| Battery life (max) | 190 h |
| Rechargeable | Yes |
| Power source type | Battery |
| Keyboard battery type | Built-in battery |
| USB Type-C charging port | Yes |

### System requirements

| Feature | Value |
|---|---|
| Windows operating systems supported | Y |
| Mac operating systems supported | Y |
| Linux operating systems supported | Y |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | -10 - 50 |

### Packaging content

| Feature | Value |
|---|---|
| AC adapter included | No |
| Number of products included | 1 pc(s) |
| Wireless receiver interface | USB Type-A |
| Receiver included | Yes |

### Battery

| Feature | Value |
|---|---|
| Battery technology | Lithium Polymer (LiPo) |
| Battery capacity | 4000 mAh |

### Features

| Feature | Value |
|---|---|
| USB connector type | USB Type-C |
| Detachable cable | Yes |
| Hot-swap | Yes |

## FAQ

### How much does the Keychron K4 QMK Keyboard cost, and is it available for purchase?

The price is 147.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 14 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 15.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Keychron K4 QMK Keyboard be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Keychron products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Keychron service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: device interface, keyboard form factor, mouse included, keyboard language, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/11631051/66854156_large.webp