Seamaster Diver 300m Co-Axial Master Chronometer Chronograph 44mm

Packing:  without packing


Basic Info

Listing code7XUDY0
ModelSeamaster Diver 300 M
Reference number210.
Dealer product code34928
Case materialSteel
Bracelet materialSteel
Year of production2022
ConditionNew (Brand new, without any signs of wear)
Scope of delivery
Original box, no original papers
GenderMen's watch/Unisex
LocationUnited States of America, New York, Airmont


Power reserve60 h
Number of jewels54


Case materialSteel
Case diameter44 mm
Water resistance30 ATM


Bracelet materialSteel
ClaspFold clasp




Central seconds, Small seconds, Chronometer, Helium Valve

• Brushed stainless steel case with polished beveled corners.
• Polished stainless steel crowns.
• Blue ceramic chrono buttons.
• Helium escape valve located on the case edge at the 10 o'clock position.
• Bezel:
• Stainless steel with polished Blue ceramic fill.
• White enamel diving scale.
• Luminous dot at the starting point.
• Dial:
• High gloss blue zirconium oxide ceramic dial, [ZrO2] engraved on the dial directly below the center hands.
• Laser engraved wave design.
• Applied polished hour markers with luminous fill.
• Fine printed minute/seconds track.
• Skeletonized hour & minute hands.
• Polished hands with luminous fill.
• Date window located at 6 o'clock.
• Small seconds sub-dial located at 9 o'clock.
• Chronograph/Stopwatch Functions:
• Large central seconds hand counter.
• Minute & hour counters are combined into a single sub-dial located at 3 o'clock.
• Movement:
• Omega Master Chronometer caliber 9900, beats at 25,200 vph, contains 54 jewels & has an approximate power reserve of 60 hours, courtesy of its twin barrels mounted in series.
• METAS Certified Master-Chronometer: The assembled watch, with its COSC certified Chronometer movement, passes rigorous tests that replicate real-life conditions. The METAS certification tests water resistance, precision and magnetic resistance.
• Anti-magnetic: resistant to magnetic fields greater than 15,000 gauss.
• Features Omegas Si14 silicon balance spring & co-axial Escapement.
• The rotor & visible bridges are decorated with a unique arabesque wave design finish.

I hope everyone is safe and healthy during these trying times. New York City has for the most part reopened so we are back in our normal office. That being said, we are still operating with limited hours, as are all of the local FedEx Shipping Centers around us. All watches should be shipped within 48-72 hours after payment is confirmed (with a few exceptions). For the safety of all employees, and their families, we are not allowing any visitors into the office whether by appointment or walk-ins.

Our timepieces are guaranteed authentic.

Each one of our timepieces go through a vigorous multipoint inspection and are carefully serviced and detailed (if needed) with only authentic original parts. All photos used in our listings are taken in-house.

We are also happy to accept trade ins towards your purchase or offer you a cash value for your timepiece.


We cannot ship out watches on Fridays, Saturdays, or Sundays. No exceptions.


All of our watches are backed by a 1 Year Limited Warranty on the movement of the watch. The warranty does not cover loss, theft, minor cosmetic damage to your watch. Any damage caused by negligence or mishandling of the timepiece is not covered including water damage.