Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm

210.30.42.20.03.001

Omega Seamaster Diver 300M Co-Axial Master Chronometer 42 mm reference 210.30.42.20.03.001 is a diver watch with a 42mm stainless steel case, 13.6mm thick, 49.9mm lug to lug, powered by the Omega 8800, with 55h of power reserve, water resistant to 300m, in production as of November 2026.

Diameter

42mm · manufacturer

Thickness

13.6mm · manufacturer

Size

Large

Lug to lug

49.9mm · manufacturer

Water resistance

300m · manufacturer

Movement

Omega 8800 · manufacturer

Type

Diver · manufacturer

Case material

Stainless Steel · manufacturer

Case shape

Round · manufacturer

Dial

Blue · manufacturer

Dial finish

Other · manufacturer

Complications

Date, Dive Bezel · manufacturer

Crystal

Domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides · manufacturer

Power reserve

55h · manufacturer

Straps

Steel Bracelet · manufacturer

Certifications

Master Chronometer, COSC Chronometer · manufacturer

Origin

Swiss (Heritage)

Era

Contemporary · manufacturer

Manufacturer: from the brand’s own product page. Corroborated: the same figure found on two or more independent pages. Entered by Horowell: chosen by a person at Horowell. Unverified: from another source, not yet checked.