Diver Case

OWC Diver Case

The OWC Diver Case looks like a diver case because it is a diver case. Our cases are engineered to perform as a dive watch and can (unlike many) be dismantled and reassembled easily with the correct tools. Simply put an OWC Case works better and can be fixed.

We took inspiration from the classic EPSA (Ervin Piquerez S.A.) Compressor Cases found in the likes of Jaeger-LeCoultre, Longines, Girard-Perregaux, IWC, Blancpain, Enicar, etc., now seen in OWC watches today.

We distilled the essence of a diving watch married this to Compressor Theory, removed the movement ring, added screws, a modern sapphire crystal and removed unnecessary dial text to make our MilSub. It may remind you of a classic, but it is an OWC.


OWC’s Diver Case is one of the few true Super Compressor cases currently in the market (http://www.orangewatchcompany.com/musings/compressor-principle/). It is more expensive to make, it is stronger and more resistant to water. It is just a better case.

We incorporate all the good OWC things like:
  • Case is designed for the movement, there is no movement ring, no movement slop and the movement fits to the case exactly.
  • Pendant is screwed in, not press fit or glued.
  • Case Back secured using screws, because a threadedback will never fit flat or flush with the O-rings due to the threads.
  • Torx screws – because they are better. They seal better, minimise burring, slippage, more tamper resistant (http://www.orangewatchcompany.com/torx-design/).
  • O-rings – top, bottom, in the crown in the pendant, under the crystal, everywhere needed.
  • Extra thick sapphire crystal- because we want to be sure.
  • Crystal retaining ring – because we do not want the watch to leak or the crystal to break during decompression. It maintains the integrity of the case.
  • Bracelet links are 33% thicker than most and use individual Torx screws. There are no pins or hidden fixings.
  • Knurling – minimises slipping.
  • One of the thinnest cases tested to 30ATM, because comfort matters too.