Divers watch are meant to be worn underwater by divers, reaching an average depth of 100-300 meters (about 350 to 999ft for U.S metric system). Most feature a water resistant band, ranging from various water-proof materials such as rubber or silicone. For instance, the Citizen Promaster Diver comes with a polyurethane strap while the Seiko Prospex has a silicone strap. The crystal on the face is usually dome-shaped to prevent shattering in the event when the glass breaks. Most of the cases are made with a screw back and a screw down crown, which is present in the Citizen Promaster.
Watches vary in power source and most light based watches require minimal sunlight to last for a long time. The Citizen Promaster Diver is fueled by light while the Seiko Diver's watch functions on an arm movement instead. Rechargeable power is very important as it will ensure a continuous supply of battery for divers to obtain crucial information during their diving expeditions.
For divers, watches are more than just an accessory that tells the time. Divers watch are somewhat complex looking but they provide divers a very important function: keeping track of how much air they have in their tank.
Seiko watches and Citizen watches were brands that were honored on Sport Diver's list of the top watches in 2015. Both brands are known for exceptionally reliable dive watches and the Seiko Prospex Marine Master and the Citizen Promaster Diver are two particular models that stood out amongst the rest.
When buying a dive watch, it is important to keep a lookout for some important features which would be how the watch is powered, the bezel, and if it is ISO compliant (certified as a dive watch). These are features that will fulfil the requirements of a diver's checklist, to