Seiko 6309 Turtle

Seiko 6309 Turtle, Seiko
gabihil, Public domain

A diving watch with a cushion-shaped case, nicknamed the turtle.

Reference 6309 was made from 1976 into the 1980s and was used by many professional divers. Seiko has reissued it in modern form.

Materials: Stainless steel; self-winding movement

Manufacture: Made in Japan; the crown is at four.

The broad cushion-shaped case.

The rotating black bezel and the round markers.