The lesson
Write the spec sheet's first half for the person who must install the product, with the mounting and wiring answers up front.
A black header carries "Era 100 Pro" and "Specification sheet" above photos of a white speaker's rear port and a black speaker on a mount. A grey "Key Features" box lists six bullets, such as "Optimized for PoE+ and compatible with PoE" and "Pro-grade surface mount (sold separately)". The overview says one Ethernet cable provides power and audio.
Don't copy the Sonos product details. Keep the feature box written for the installer's decision and the photos picked to show connection points.