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The Alpina Seastrong Diver Extreme is a 300 m automatic dive watch with a stainless steel case, sapphire crystal, blue dial and a black rubber strap. Its AL-525 movement runs at 4 Hz with a 38-hour power reserve and adds a date window. It sits above Alpina's 3 ATM Seastrong variants and competes with entry-level Swiss divers like the Tissot Seastar and Certina DS Action on water resistance and sapphire glass, though it lacks a screw-down crown guarantee many rivals advertise. It suits divers and desk divers who want a rugged Swiss automatic without the price of a luxury diver.
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Lowest price we've seen: $2,295.00 on Nov 9 at Nordstrom. Tracked across 1 store since Nov 9.
Owners of the Seastrong Diver Extreme line generally praise its build, legibility and sapphire glass for the money. Some note the movement's modest power reserve and the watch's size on smaller wrists.