"A feature list from a $100 keyboard built to a $40 price point."
The 'liquid-foundation keycaps' are PBT plastic, which resists finger oils better than cheaper ABS, while the 'smart knob' is a simple volume dial. These are premium-adjacent features on an otherwise budget-grade keyboard chassis.
This keyboard is for someone prioritizing a specific desk aesthetic on a strict budget. The media knob and PBT keycaps offer tangible features uncommon at this price, assuming the underlying switch feel is not a primary concern.
Anyone who cares about the tactile feel and longevity of mechanical switches should look elsewhere. The deliberate omission of the switch type signals this is not an enthusiast product, and entry-level mechanicals can be found for a small price increase.