The new dive watches in Seiko’s Prospex line feature icy upgrades to the brand’s popular “Sumo” series.

It’s hard to think of many activities that sound more hardcore than ice diving, which is what a new series in Seiko’s line of professionally oriented Prospex sport watches purports to be designed for. Three models with different-colored dials and bezels have the bold presence and tough build of the brand’s “Sumo” dive watches, but feature upgrades and refinements for these special editions made for the US.
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