Wireless - no cables attached to a fixed object, like a PC, allows free movement

Knuckle controllers - YES if same/similar to current generation's form factor

Body tracking (no separate device) - no independent trackers required (visual/camera only)

Body tracking (sold with device) - sold with body tracking sensors, or as add-on

Base stations - requires wall mounted lighthouses required for tracking

Prescription lenses - if Valve sells prescription lens inserts as an add-on