The Dive Housing works with the Oceanic+ app and Apple Watch.

The Apple Series 9 watch straps are awesome and come with the dive straps. 

These straps were built for high-speed water sports and recreational scuba diving.
Light, flexible, and stretchy for an easy, optimal fit

They are made from Flexible Fluoroelastomer.
High-performance elastomer with a tubular geometry allows the band to stretch for a perfect fit, even over a wetsuit. Come try them on.