# Mechanical keyboard Keychron K3X-B4 — 75% low-profile, wired & Bluetooth 5.2, USB-C, RGB backlight, grey, battery up to 124 h

**URL:** https://aio.lv/en/product--keychron-k3x-b4--11694758
**Data updated:** 2026-02-19 13:18 (EET)
**Category:** Keyboards
**Manufacturer:** Keychron
**Manufacturer code:** K3X-B4
**EAN:** 4894979018083
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 97.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 80.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--keychron-k3x-b4--11694758

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Friday | free |
| Pickup points | 01.07.2026 | 1.89 EUR |
| Courier delivery to door | 01.07.2026 | 4.99 EUR |

## Summary description

Keychron K3X-B4 is a 75% low-profile mechanical keyboard with both wired (USB Type-C) and wireless Bluetooth 5.2 connectivity. It features multicolour RGB backlighting, a compact 75% layout and a rechargeable battery providing up to 124 hours of use. Suitable for office, home and portable setups where space saving, responsive low-profile keys and dual-mode connection are needed.

## Long description

Keychron K3X-B4 is a 75% low-profile mechanical keyboard that combines a compact layout with both wired and wireless connectivity. The K3X-B4 supports USB Type-C wired connection and Bluetooth 5.2, offers multicolour RGB backlighting and a slim profile designed for reduced travel key switches. A rechargeable internal battery provides up to 124 hours of operation depending on backlight and usage settings. The grey finish and space-saving 75% form factor make it suitable for desktop and portable setups where desk space and streamlined key feel matter.
Advantages
The keyboard delivers responsive low-profile mechanical keys for faster actuation and a lower overall height than traditional mechanical keyboards. Dual-mode connectivity allows quick switching between a stable wired USB-C connection and wireless Bluetooth 5.2 for multiple devices. Multicolour RGB backlighting provides adjustable illumination for different lighting conditions while the compact 75% layout retains essential keys in a smaller footprint. Rechargeable battery operation extends usability without constant cable use.
Suitable for
 Office and productivity work where a compact keyboard and reliable typing are required
 Home setups and remote work with limited desk space
 Portable use with laptops or tablets that support Bluetooth or USB-C
 Users who prefer low-profile mechanical key feel and adjustable backlighting
Key specifications
 Form factor: 75% compact layout
 Key profile: Low-profile mechanical switches
 Connectivity: Wired USB Type-C and Bluetooth 5.2 wireless
 Backlight: Multicolour RGB illumination
 Charging: USB Type-C charging port
 Power source: Built-in rechargeable battery, up to 124 hours depending on settings
 Colour: Grey
How to use
Connect the keyboard to a computer using the included USB Type-C cable for wired operation and charging. To use wirelessly, enable Bluetooth on the keyboard and pair it with your device using standard Bluetooth pairing procedures; the Bluetooth 5.2 support allows connection to modern laptops, tablets and phones. Adjust backlight settings through the keyboard shortcuts provided in the user manual and monitor battery level to plan recharging sessions. The low-profile keys function like standard mechanical switches but with reduced key travel; allow a short adjustment period if switching from a full-height mechanical keyboard.
Usage recommendations
For longest battery life, reduce backlight brightness or disable RGB lighting when not needed and use wired connection for extended sessions or when charging. Keep firmware updated when updates are available to ensure stable Bluetooth performance and compatibility.

## FAQ

### How much does the Keychron K3X-B4 75% low-profile mechanical keyboard cost, and is it available for purchase?

The price is 97.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 30 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 Friday 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Keychron K3X-B4 75% low-profile mechanical 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

## Image

https://aio.lv/img/cache/product/11694758/67064608_large.webp