This Omega Seamaster Professional Diver features a blue dial, is 41mm in size and has a water resistance of 300m.

• Condition: Excellent
• Case size: 41mm
• Depth rating: 300m
• Water resistance: Screw-down crown

A mid-size Omega Seamaster Professional 300M ref. 2551.80 with a blue wave dial and skeleton hands. The watch has an unpolished case with some scratches on the bezel insert and lighter marks, but presents well on the wrist.

• Condition: Pre-owned with signs of wear
• Case size: 36.25mm
• Bezel condition: Visible scratch around 5 o'clock along with lighter marks
• Dial condition: Clean with well-preserved lume

A 2025 Omega Seamaster Professional 300M in 42mm with a green 'Seaweed' dial, available with a standard pin buckle or deployant and rubber strap.

• Condition: Excellent, bordering on Like New
• Buckle type: Standard pin buckle
• Deployant available: Yes, additional cost applies for deployant and rubber strap

This Omega Seamaster 300M Professional No-Date is a new model that was launched last year, featuring a 42mm case and 300m water resistance.

• Condition: Excellent
• Case size: 42mm diameter
• Water resistance: 300m

This is a listing for an Omega Seamaster Professional 300M 42mm. The watch comes with its original box and papers from 2020.

This Omega Seamaster Professional 300M features a blue wave dial, aluminum bezel, and classic skeleton hands, representing a key transition era when Omega introduced the Co-Axial escapement into the Diver 300M line. The watch is powered by the Omega caliber 2500 Co-Axial chronometer, offering improved long-term stability and reduced friction compared to traditional lever escapements. The 41mm case wears closer to a 39mm diver thanks to its compact lug-to-lug and well-balanced proportions.

• Condition: Excellent
• Case size: 41mm
• Lug-to-lug: ~47.5mm
• Bracelet length: ~18.2cm (~7.17 inches)

For sale is this classic Omega Seamaster Diver 300m, a great versatile diver and daily watch with an automatic co-axial movement.

• Condition: Used
• Bracelet condition: showing signs of wear throughout with one small scuff on the clasp
• Included accessories: box, manual, pictogram card, black rubber Zealande Strap

A beautiful example of the SMP on rubber, dated 2023 and in excellent condition, with a full set including multiple accessories.

• Condition: very good preowned condition, like new
• Material: rubber strap
• Box: outer white cardboard box, inner wooden box, travel case

This Omega Seamaster Professional 300M features a modern case and movement paired with a vintage SMP dial feel, an aluminum bezel with lumed numbers, and comes as a complete set.

• Bracelet type: OEM mesh stainless steel
• Box and papers: yes