Designed for divers and professionals Water resistant to 30 bar (300 metres) MEGA Master Chronometer Calibre 880042mm stainless steel case paired with a striking green rubber strap Master Chronometer officially certified by METASDIVE DEEP INTO EXTRAORDINARY TIMEKEEPINGPaying tribute to Omegas ocean heritage, the Seamaster Planet Ocean collection features Master Chronometer certification, advanced designs and water resistance to 30 bar (300 metres).Designed for use underwater, the Pro Diver collection includes co-axial escapement for long-lasting precision, a silicon balance spring for superior anti-magnetism, and a newly designed helium escape valve. ULTIMATE PRECISIONThis 42mm model is presented in a stainless steel case, framed by a green ceramic bezel with a white enamel diving scale, and presented on a green rubber strap. A further nod to the collections marine legacy, the polished green ceramic dial features a laser-engraved wave pattern and is organised with rhodium-plated skel