---
title: "Omega Seamaster Diver 300M 42mm Stainless Steel Black Dial 210.30.42.20.01.001"
type: "product"
brand: "Omega"
model: "Seamaster Diver 300 M"
reference: "210.30.42.20.01.001"
price: 4795
currency: "GBP"
condition: "Pre-owned"
year: ~
category: "Watches"
subcategory: "Omega"
availability: "In Stock"
url: "https://jamesrossjewellers.co.uk/omega-seamaster-diver-300m-42mm-stainless-steel-black-dial-21030422001001-jrw-322"
image: "https://jamesrossjewellers.co.uk/uploads/original_image/51735ebe67d2ddf9bc39d2335b872518.jpeg"
updated: "2026-09-04"
---

# Omega Seamaster Diver 300M 42mm Stainless Steel Black Dial 210.30.42.20.01.001

## Price

**£4,795** (Finance available from £451.13/month)

## Description

This unworn Omega Seamaster Diver 300M, reference 210.30.42.20.01.001, features a 42mm stainless steel case with a striking black dial and black ceramic bezel. One of Omega’s most recognisable modern sports watches, it combines classic Seamaster styling with contemporary materials and exceptional everyday versatility.
Powered by the Omega Calibre 8800 Co-Axial Master Chronometer automatic movement, the movement can be viewed through the exhibition caseback. This example is presented in unworn condition with an undated card and comes complete with its box, papers and accessories, together with a four-year guarantee.
With decades of expertise and a trusted reputation, James Ross Jewellers proudly presents an exceptional collection of luxury and vintage watches.
This watch has been checked against technical records to guarantee authenticity and a clean history.

## Specifications

| Specification | Value |
|---------------|-------|
| Brand | Omega |
| Reference Number | 210.30.42.20.01.001 |
| Year | Undated |
| Condition | Pre-owned |
| Dial Colour | Black |
| Movement | Automatic |
| Serial | 83465908 |
| Gender | Gents |
| Box | Authentic Box |
| Material | Stainless Steel |
| Keywords | Omega Seamaster 300M, Omega 210.30.42.20.01.001, Black Seamaster 300M, Omega Calibre 8800, Omega Master Chronometer, Unworn Omega Seamaster |
| Papers | Yes |
| Strap design | Stainless Steel |
| Model | Seamaster Diver 300 M |
| Case Size | 42mm |

## About The Diamond Box

The Diamond Box is North London's distinguished destination for luxury watches and gold jewellery since 1997. Visit us at 114 Ballards Lane, N3 2DN, London or call 020 8838 3655.


[View this product on our website](https://jamesrossjewellers.co.uk/omega-seamaster-diver-300m-42mm-stainless-steel-black-dial-21030422001001-jrw-322)