Dive watches are essential tools for scuba divers, providing safety and timing functions underwater. A good dive watch should have a water resistance rating of at least 200 meters, a rotating bezel for tracking time, luminescent markers for visibility, and durability against saltwater and pressure. Seiko and Citizen are two respected brands offering high-quality dive watches under $1000, with several models designed specifically for divers. These watches are not only reliable but also support ocean conservation efforts, making them a great choice for anyone exploring underwater environments.