the first general public diver's watch equipped with a helium release valve

The enhanced dial with applied hour markers adds a touch of sophistication

elegant matte silver hue

38-hour power reserve

Professional Bracelet:Rubber Black the first general public diver'sThe SUB 300 sports watch combines functionality with style, maintaining foundational tool watch features in a redesigned 42. 5 mm diameter case, now slimmer at 11. 95 mm. The black ceramic bezel and screw down crown enhance its sport chic character, complemented by a sophisticated sunburst dial finish. Available with an FKM rubber strap or stainless steel "Beads of Rice" bracelet, both featuring a ratcheting folding clasp, the watch is water resistant