Compact mechanical keyboard in a super deal! The Eternico K800S Wireless no longer costs even a thousand

The compact wireless mechanical keyboard with Czech localization and backlighting has just dropped below a thousand. The Eternico K800S has now dropped from its original 1 399 Kč to 979 Kč with code 30ETERNICO2026. It’s great for both gaming and work, and users praise it.

Quick summary:
✅ It makes sense if you want a compact mechanical keyboard that saves desk space and you like a pleasant, quiet press.
⚠️ Consider that the 75% layout is cramped (no gaps between key blocks) and that battery life drops to a few days with RGB enabled.
💡 At 979 Kč, it’s an unbeatable price for a wireless mechanical keyboard with backlighting and CZ/SK localization.

Why this keyboard is interesting

This Eternico K800S keyboard is aimed at people who want a mechanical keyboard but with the smallest possible footprint on their desk. You get a compact 75% format, tactile Gateron Brown switches, and full CZ/SK localization including backlit Czech characters. According to reviews, the main surprise is the pleasant keypress and quality sound, which users repeatedly compare to significantly more expensive keyboards. At 979 Kč with code 30ETERNICO2026, it’s one of the cheapest ways to get a wireless mechanical keyboard with backlighting.

Key parameters in plain language

The core consists of tactile Gateron Brown switches with a gentle tactile response without loud clicking – suitable for long typing sessions and gaming without disturbing others. Compared to the full-size variant, this is a compact 75% with 84 keys, so it doesn’t have a separate numeric keypad, but it saves a lot of space. You can connect it in three ways (2.4GHz receiver, Bluetooth 5.0 with three channels, USB-C cable), to a total of up to five devices. It also features RGB backlighting with 22 effects, full n-key rollover and anti-ghosting, and switching between Windows and macOS.

Practical aspects: layout, battery life, charging

The most important thing with a compact keyboard is the layout, and here it’s fair to be honest. The 75% format saves space, but it’s cramped – many users mention that there are no gaps between key blocks (F-row, arrow keys, navigation keys are packed together), so tactile orientation takes a while, and the shift key is often right above the arrow key. Those who type by touch and are used to spacing should keep this in mind. The second thing is battery life dependent on backlighting: with RGB on, it’s a matter of days; with it off, easily a week or more.

It charges via the included braided USB-C cable (1.5 m), but beware – the manufacturer explicitly warns that it must not be charged with a fast charger (QC/FC). Switching between connection methods is handled by a slider, not a key, which people who frequently switch between computers find inconvenient. A practical plus is the battery status indication directly via backlighting and the option to use the keyboard purely via cable.

What users say

The rating is solid: 4.6 out of 5 from 45 customers and 87% of buyers recommend the keyboard. Most often, people praise the pleasant and quiet keypress, quality sound, well-executed backlighting, and compact dimensions – several reviewers call it the best purchase from Alza and compare it to more expensive keyboards from established brands. They also appreciate that everything is set directly from the keyboard without the need for software.

However, repeated criticisms also emerge. In addition to the cramped layout and weaker battery life with RGB, some people mention rattling switches on the underside, which need to be lubricated to prevent the keyboard from making parasitic noises. More demanding users will be disappointed by the absence of software for key mapping (VIA), and some dislike that Caps Lock is not distinguished by a different color. Isolated faulty units have also appeared; the return rate is 3.34%.

When it doesn’t make sense

If you work with numbers daily and need a numeric keypad, the compact 75% format is not for you – opt for the full K800F variant. Those who type by touch and are used to spacing between key blocks will take some time to get used to the cramped layout, or it might not suit them at all. And if you want to deeply configure keys and macros in software, there is no application here. Under these conditions, it makes sense to consider a different model.

Verdict: who it’s worth it for

If you want a compact wireless mechanical keyboard that saves desk space, and you don’t mind a tighter layout or the absence of a numeric keypad, the Eternico K800S for 979 Kč is a hard-to-beat offer – especially considering its 4.6 out of 5 rating and three-year warranty. For a saving of 420 Kč compared to 1 399 Kč, you get Gateron Brown switches, quality sound, and connectivity to up to five devices. Just keep in mind that the 75% layout is cramped, RGB shortens battery life, and software is missing. However, for a compact setup for the office or home for under a thousand, it’s one of the best choices on the market.

Would you prefer a compact keyboard without a numeric keypad, or a full-size format with a numeric keypad?