The Base Tide Pro delivers a double-overhead dose of durability and functionality. Featuring 500 pre-programmed tides and sunrise/sunset locations inside a tough-as-nails case, the Base Tide Pro is one of the toughest in the lineup. Multi-Function Digital Custom digital module with pre-programmed tide information for 550 beaches around the world. Surf Ready 42mm, 100 meter/10ATM custom TR90 case with hardened mineral crystal, 10 ATM water-resistant pushers, stainless caseback. Locking Looper 24mm custom injection molded silicone band with patented double locking looper and solid stainless steel buckle. Dial Negative LCD with printed tide graph.