Take on the depth of the oceans in style with this COSC-certified Certina DS Action Aqua Chronograph Men\'s Watch. At A Glance  Presented on a stainless steel bracelet with fold over clasp and divers extension 43mm case size with 300m water resistance Blue dial with blue aluminium rotating bezel White index and Arabic hour markers with chronograph sub dials and date window at 6 o\'clock Scratch resistant sapphire crystal glass with antireflective treatment on one side Screw down crown, pushers and case back Powered by a Swiss quartz movement COSC certified