The Abyss was the biggest, baddest diver ever put out by Zelos. Rated to 3,000 meters and armored with a chunky, angular bronze case, the Abyss was one beast of a watch and a fan-favorite for those who love aggressive dive watches. Now it’s getting an upgrade, and this time it’s chock full of little details that have come to define the brand.The CuSn8 bronze case (it starts out looking almost rose-gold but quickly patinas) measures 43mm wide and 19mm tall. There are no two ways about it, this is a fat watch, so if you’re thinking of giving this one a go, then that’s a thickness and presence you have to be comfortable with on the wrist. The lug-to-lug measurement is relatively tempered at about 51.5mm, which is a number that makes sense proportionally with the width of the case. A 7mm-thick, double-domed sapphire crystal protects the dial, and it features an internal anti-reflective coating.