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Stainless steel diver watch with grey dial and sapphire crystal

Omega

Omega Seamaster Diver 300M Automatic Grey Dial Watch 210.30.42.20.06.001

SKU CH-BSX8-26KV6

A stainless-steel diver’s watch with a grey dial, automatic movement and 300-meter water resistance

  • MaterialStainless Steel
  • AdjustableRound
  • Diamond ColorGrey
  • DisplayAnalog
  • FastenerSapphire Crystal,Deployment Clasp,Date Display,Screw In Crow
  • Indications & FunctionsDotted Markers
  • 300 m water resistance suits serious diving
  • Automatic movement runs without batteries
  • Grey dial with dotted markers aids readability
  • Stainless steel case resists daily wear
  • Sapphire crystal protects against scratches

Built for divers and daily wear

The Omega Seamaster Diver 300M Automatic Grey Dial Watch 210.30.42.20.06.001 delivers 300-meter water resistance for serious underwater use. Its stainless steel case and automatic movement suit professionals and enthusiasts who need reliability without batteries. The grey analog dial with dotted markers offers clear readability in low light. This timepiece fits wrists that demand both tool-watch durability and everyday elegance.

Sealed performance on the wrist

A screw-in crown and sapphire crystal protect the movement from pressure and impacts at depth. The automatic calibre winds with natural motion, eliminating battery changes and reducing maintenance intervals. Stainless steel construction resists corrosion from saltwater and sweat during extended wear. Deployment clasp security keeps the watch fastened during vigorous activity.

Integrates with strap changes and travel

The deployment clasp allows quick adjustment over wetsuit sleeves or shirts without tools. Sapphire crystal clarity remains uncompromised by scratches from equipment or daily contact. No charging cables or battery spares are needed, freeing luggage space for long trips. Buyers needing quartz precision or smartwatch connectivity should consider other categories.

Highlights

  • 300 m water resistance suits serious diving
  • Automatic movement runs without batteries
  • Grey dial with dotted markers aids readability
  • Stainless steel case resists daily wear
  • Sapphire crystal protects against scratches

Specifications

MaterialStainless Steel
AdjustableRound
Diamond ColorGrey
DisplayAnalog
FastenerSapphire Crystal,Deployment Clasp,Date Display,Screw In Crown
Indications & FunctionsDotted Markers

Questions about this item

How is the screw-in crown on the 210.30.42.20.06.001 set correctly and what step do owners often miss?

Unscrew the crown fully, pull it out to adjust the time or date, then push it back in and screw it down tightly until it seats against the case; the step most people forget is re-tightening the crown, which breaks the 300 metre water resistance.

What maintenance will the automatic movement and seals on this Seamaster need over time?

The mechanical movement should be serviced every four to five years for lubrication and timing checks, and the crown and case-back gaskets must be replaced during that service to keep the 300 metre rating intact.

What is the first limit reached when the watch is worn continuously underwater at depth?

The 300 metre water-resistance rating is the hard limit; exceeding that pressure risks case or crystal failure, so the watch must not be taken deeper than the rated depth.

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