Seiko Prospex Land Tortoise Automatic Diver's SRPG17 SRPG17K1 SRPG17K 200M Men's Watch The Seiko Turtle turned into a land-exploration watch while retaining some of its diving abilities. Seiko’s new take on the Turtle brings a compass bezel instead of the classic, 60-minutes scale working as a timer; the case design resembling many others within the Turtle segment. It’s the typical, pebble shape without any protruding lug; it’s got strong shoulders despite looking overall soft and somewhat circular.