The main difference between the Business and non-Business versions of the keyboard lies in the wireless technology used and the security features. The Business version uses Logi Bolt technology, which provides a more reliable and secure wireless connection, specifically designed for business environments with improved interference management and full FIPS-compliant encryption. It is optimised for cross-platform compatibility and secure connection only with the Logi Bolt USB receiver, which is not specified for the non-Business version. What's more, the Business version is explicitly presented as tailored to corporate IT needs, with features and ergonomic support similar to the standard version.

it has no coating

You can find a front view at galaxus.ch, search K860

I assume you mean the Logitech Ergo K860 (CH, Wireless) variant (manufacturer number 920-009874) Exact specs can be found at https://www.logitech.com/de-ch.... The specs for 920-010347 can be found at https://www.logitech.com/de-at.... The cheaper model should come with Unifying receiver and the other (business model) with Bolt receiver. So the main difference should be in the transmission technology.