OMEGA Seamaster 300 43.5 mm 215.30.44.21.01.001, reference 215.30.44.21.01.001, is a heritage-influenced dive watch that connects modern OMEGA watchmaking with the Seamaster 300 legacy. It pairs OMEGA’s Swiss watchmaking with the reference-specific design and technical details that distinguish this model.
It was with OMEGA’s maritime legacy in mind that the brand launched its Planet Ocean line in 2005. Today, the stylish OMEGA Seamaster Planet Ocean 600M Master Chronometer pays homage to OMEGA’s dive watch heritage.
This model, with its scratch-resistant sapphire crystal, features a blue ceramic dial with Arabic numerals and a date window at the 3 o’clock position. The blue ceramic unidirectional bezel with OMEGA Liquidmetal™ diving scale is mounted on a 43.5 mmstainless steel case.
Other features include an alveol screw-in caseback and a stainless steel bracelet with patented extendable foldover clasp
The OMEGA Seamaster Planet Ocean 600M Master Chronometer is water resistant to 600 metres / 2000 feet / 60 bar, and has a helium-escape valve. The OMEGA Master Chronometer calibre 8900 at the heart of this timepiece can be seen through the transparent caseback. To achieve Master Chronometer status, it has passed the 8 rigorous tests set by METAS (The Swiss Federal Institute of Metrology).
For clients considering an OMEGA watch for sport, travel and water-focused wear, this reference offers the established character of the OMEGA Seamaster 300 collection in a configuration specific to this model.
Technical details
Seamaster specifications
Reference
215.30.44.21.01.001
Collection
Seamaster
Movement
Self winding
Calibre
Omega 8900
Functions
Hours, minutes, seconds, Anti-magnetic, Chronometer, Date, GMT and Worldtimer, Helium escape valve, Master Chronometer Certified, Time zone function
Power reserve
60 hours
Case dimensions
43.5 mm
Case material
Steel
Dial
Black
Indexes
Arabic numbers / indexes
Crystal
Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides
Water resistance
60 bar (600 metres / 2000 feet)
Strap / bracelet
Steel
Clasp
Foldover clasp with comfort setting and diver extension
Warranty
5-year OMEGA international warranty
Origin
Swiss made
Why choose this watch
Why choose this Seamaster?
This Seamaster combines Self winding with Domed scratch‑resistant sapphire crystal with anti‑reflective treatment on both sides and 60 bar (600 metres / 2000 feet) water resistance. Its verified specifications and OMEGA design and Swiss watchmaking heritage make it a considered choice for daily wear, collecting or gifting.
Shop with confidence
Shipping, exchanges and warranty
Shipping and in-store pickup
Orders over $250 ship free within Canada. Orders generally process within 2–5 business days; Flexiti or Affirm orders may require 4–7 business days. Canadian delivery generally takes 3–10 business days after processing, with peak-season exceptions described in our policy.
In-store pickup can be selected at checkout. We will email you when your order is ready; please bring your order confirmation and valid identification.
Eligible items may be exchanged within 7 days of delivery when they are unworn, in original condition and returned with their original packaging and accessories. Purchases are not eligible for refunds, and exclusions apply to clearance and personalized items.
This watch receives OMEGA international manufacturer warranty coverage for 5 years, subject to OMEGA’s applicable international warranty terms and exclusions.
OMEGA buying guide
Choosing the right Seamaster
Review water resistance
Compare the verified rating and intended use across Aqua Terra, Diver 300M, Seamaster 300 and Planet Ocean references.
Choose the movement
Review calibre, power reserve and functions for the exact reference you are considering.
Select the configuration
Steel bracelets, rubber straps and leather options create different fit, weight and character.
Frequently asked questions
OMEGA product FAQ
Is this an authentic OMEGA watch?
This watch is sold as a genuine OMEGA product. Included presentation materials and warranty documents are those supplied with the specific reference; contact us before ordering if you would like confirmation of the package contents.
What OMEGA warranty is included?
This watch receives OMEGA international manufacturer warranty coverage for 5 years, subject to OMEGA’s applicable international warranty terms and exclusions.
Can I pick up my order in store?
Yes. Select in-store pickup at checkout and wait for our ready-for-pickup email before visiting.
Can I swim with this watch?
Use only the verified water-resistance rating shown in the specifications, follow OMEGA’s care guidance and have water resistance checked periodically. Water resistance is not permanent.
How should an automatic OMEGA watch be maintained?
Follow the OMEGA user manual, avoid impacts and strong magnetic fields, and arrange periodic servicing through an authorized service channel.
OMEGA Seamaster 300 43.5 mm 215.30.44.21.01.001$10,100.00
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