The Pro model has electromagnetic dimming, which allows it to change the transparency of the glass - from fully transparent to fully opaque.
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what's in the box: -Glasses Unit -Prescription Lens Frame -Detachable USB Type-C Cable -Light Shield -Three types of Nose Pads -Travel Case -Cleaning
XREAL Air 2 AR Glasses, Up to 330 Wearable Display with All-Day Comfort, 72g 120Hz 1080P, Ideal for Gaming, Streaming and Working, Smart Glasses