Choosing the right wrist-mounted dive computer can mean the difference between a streamlined, safe dive and fumbling with gear in strong currents. In this episode, Ray Hollister draws on four decades of underwater experience to break down which dive computer watches actually deliver when saltwater and depth put them to the test. Whether you're a recreational diver looking for your first serious computer or an experienced diver ready to upgrade from a clunky console unit, this guide cuts through the marketing hype to reveal what works, what fails, and what's worth your money.

• The Shearwater Peregrine hits the sweet spot for recreational divers, offering a brilliant 2.2-inch color display readable at 100 feet, Bühlmann ZHL-16C algorithm with gradient factors, and 30-plus hours of battery life—though its flat screen is more vulnerable  ...