Not exactly, left my scale in the shop, sry.
But i had all 3 devices shown in below screenshot of Leszeks video in hand and when i recall correctly, the pro1 (middle) was only very slightly heavier than the XA2 Ultra (left). That is known to weigh 221g.
My guesstimate is the Pro1 prototype we had at Froscon does weigh between 230 and 250g.