The Pro model has electromagnetic dimming, which allows it to change the transparency of the glass - from fully transparent to fully opaque.
XReal Air 2 Ultra Review: An Apple Vision Pro Competitor? - XR Today
XREAL Air 2 Pro
Air2 Pro. The ultimate wearable display experience., Ships in 5 work days., Explore >>, Connectivity:, USB-C DisplayPort, Items Included:, Glasses
XREAL Air 2 Pro
RayNeo Air 2 XR glasses review: Not true AR but entertaining nonetheless
My quick impressions of the Xreal Air 2. (OK kinda' lengthy) : r/Xreal
XREAL Air 2 Pro
Xreal Air 2 and Air 2 Pro glasses go global with better displays and lower weight - news
Xreal Air 2 and Air 2 Pro glasses go global with better displays and lower weight - news
Xreal Air 2 Ultra Hands On: The would-be Vision Pro competitor
XREAL Air 2 and Beam Bundle, Up to 330 Wearable Display with All-day Comfort, 72g 1080P, Ideal for Gaming, Streaming and Working, Smart Glasses, Best TV/Projector/Monitor Alternative : Electronics