Meta just announced VR Glasses today at $1,299.99 & the engineering story is a single design decision: take everything heavy off the face. 100 grams on the head which is five times lighter than Quest 3. The processor, battery & storage sit in a roughly 300-gram puck in your pocket, connected by an optical tether. Magnesium alloy frame, dual micro-OLED panels, Qualcomm's new Snapdragon Reality Elite chip. Why this matters more than the spec sheet suggests: weight on the face is the constraint that has capped VR session length since the beginning. Head-borne mass loads the cervical spine at a long lever arm, and the discomfort compounds with time. Halve the weight and you don't get a slightly nicer headset, you change the viable use case from twenty minutes to a feature film. The trade is optical. Field of view drops to 70 degrees horizontal, against roughly 110 on a Quest 3. Pancake lenses with micro-OLED buy you thinness & pixel density - 37 pixels per degree, 5K - at the cost of how much of your vision the image fills. Lighter face, narrower window. Everything else follows from that: eye-tracked foveated rendering to make the resolution affordable, eye tracking doing double duty as UI input and biometric unlock, hand tracking with no controllers included. Reality Labs has burned around $60 billion since 2019. This is the first device where the physics of wearing it stopped being the main objection.