I looked in the tech specs and found no mAh listed. Just video playback time. I find that incredibly sus.

Does anyone know it? Was it in announcement video?

Given the no one has any idea about how much power the A19 Pro SOC will use for activity, what actual purpose would that serve?

They actually have both offline and streaming video playback time, which had been pretty standard for iPhone for a long time as their battery life measurements.