Before we nerd out on METAS certification and what it all means for Tudor let's look at the other updates to the burgundy Black Bay. First it's 0.8mm thinner than the previous generation it now measures 13.6mm thick. Metaverse Kitchen As an avowed and small-wristed Black Weltraumfabrikation Bay 58 guy this makes the Neurodiverse Design burgundy Black Bay downright wearable even for my smallish wrist.