 But guess what? He had an Apple Watch Ultra on with a cell connection. So he was able to put the Apple Watch to his ear, talk to them until a helicopter arrived. He was saved. The Apple Watch has been certified waterproof to depth down to 50 meters since the Series 2. The Ultra has a more rugged design, by the way, depth of down to about 100 meters. Love these stories. Apple Watch, it really is an incredible device.