The VR market in 2021 saw a surge of “mixed‑reality” headsets that blend the virtual world with the real one through external cameras. Two of the most talked‑about devices were PassthroughVR (the early name for the Meta Quest 2’s “Passthrough” feature) and RealVR (the consumer‑focused headset from RealWear). Below is a concise overview of their hardware, software ecosystems, and use‑case niches.