Rolex Sea Dweller specially designed for underwater limit exploration. Complicated and exquisite three pieces watchcase structure---Ringlock System, which can let the wristwatch stand to the huge pressure of 3900 meters deep. The bezel of Rolex Sea Dweller beset with black scratch resistant Cerachrom circle and titanium watch back case. Besides, it even equipped with unique double-extension system strap designation that can make the diver experience comfortable even wear the diving suit. Learn More