Omega Speedmaster Moonwatch Professional Co-Axial Master Chronometer Chronograph 42 mm

310.20.42.50.02.001

Omega Speedmaster Moonwatch Professional Co-Axial Master Chronometer Chronograph 42 mm reference 310.20.42.50.02.001 is a chronograph watch with a 42mm two-tone case, 13.2mm thick, 47.5mm lug to lug, powered by the Omega 3861, with 50h of power reserve, water resistant to 50m, in production as of November 2026.

Diameter

42mm · manufacturer

Thickness

13.2mm · manufacturer

Size

Large

Lug to lug

47.5mm · manufacturer

Water resistance

50m · manufacturer

Movement

Omega 3861 · manufacturer

Type

Chronograph · manufacturer

Case material

Two-Tone · manufacturer

Case shape

Asymmetric · manufacturer

Dial

Silver · manufacturer

Dial finish

Sunburst · manufacturer

Complications

Chronograph · manufacturer

Crystal

Scratch-resistant sapphire crystal with anti-reflective treatment inside · manufacturer

Power reserve

50h · manufacturer

Straps

Steel Bracelet · manufacturer

Certifications

COSC Chronometer, Master 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.