also: ダイバーズウオッチ
noun
diver's watch; diving watch; dive watch
A wristwatch designed for underwater diving, typically water-resistant to at least 100 meters and featuring a unidirectional bezel.
彼は新しいダイバーズウォッチを買って、すぐに海へ潜りに行った。
He bought a new diver's watch and immediately went diving in the ocean.
このダイバーズウォッチは水深
This diving watch is water-resistant to a depth of 200 meters.