Dive watches are incredible pieces of engineering that function perfectly despite extreme water pressures. For example, the Rolex Sea-Dweller Deepsea is water resistant to nearly 13,000 feet(!) and has 3 pressure-absorbing materials. And on top of that, it has a stunning blue-black gradient face.
Read the full article here: The Rolex Deepsea and 6 Other Extreme Dive Watches