This Luminox Deep Dive watch is has a unidirectional rotating and count-up/dive bezel, luminous hands, and a screw-down crown, this watch is water-resistant up to 500 meters (50 ATM), making it perfect for deep sea diving and other water activities.

Watch also has a self-winding Swiss movement, sapphire crystal, solid caseback, and a PVD-coated stainless steel case finish.

Under the seals this watch has a Helium filled internal chamber. This allows you to switch between cold and warm water without the face of your watch fogging over. This watch has never fogged up on me.

Lastly, this watch uses a perpetual motion mechanism so you will never have to replace a battery as there is not a battery in this watch.