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O Seamaster DIVER 300M CO‑AXIAL MASTER CHRONOMETER Ref.210.30.42.20.01.001

$1,052.00 $349.00

🔹 OverviewThe O Seamaster Diver 300M Ref. 210.30.42.20.01.001 is a modern classic, celebrating O’s legacy of ocean exploration since 1993. This 42 mm professional dive watch combines sporty elegance with technical mastery, offering durability, readability, and timeless design for divers, athletes, and adventurers alike. 💎 Key SpecificationsCase: Stainless steel, 42 mm, polished and...

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Dresses Size Chart

Dress Size Chart (Inch)
DRESSES
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 34"-35"
S 2-4 33"-34" 26"-27" 36"-37"
M 6-8 35"-36" 28"-29" 38"-39"
L 10-12 37"-39" 30"-32" 40"-42"
XL 14 40"-42" 33"-35" 43"-45"
Dress Size Chart (cm)
DRESSES
SIZE IN CM
SIZE US / CAN BUST WAIST HIPS
XS 0 78.7-81.2 60.9-63.5 86.3-88.9
S 2-4 83.8-86.3 66-68.5 91.4-93.9
M 6-8 88.9-91.4 71.1-73.6 96.5-99
L 10-12 93.9-99 76.2-81.2 101.6-106.6
XL 14 101.6-106.6 81.2-88.9 109.2-114.3

Swimwear Size Chart

Dress Size Chart (Inch)
SWIMWEAR
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 33"-34"
S 2 33"-34" 26"-27" 35"-37"
M 4 35"-36" 28"-29" 37"-38"
L 6 37"-39" 30"-32" 39"-41"
XL 8 40"-42" 33"-35" 42"-44"

Shoes Size Chart

US EURO UK AUS JAPAN CHINA
5 35-36 3 3.5 21.5 35
5.5 36 3.5 4 22 35.5
6 36-37 4 4.5 22.5 36
6.5 37 4.5 5 23 36.5
7 37-38 5 5.5 23.5 37
7.5 38 5.5 6 24 37.5
8 38-39 6 6.5 24.5 38
8.5 39 6.5 7 25 38.5
9 39-40 7 7.5 25.5 39
9.5 40 7.5 8 26 39.5
10 40-41 8 8.5 26.5 40
11 41-42 9 9.5 27.5 41

Delivery

    All orders shipped with UPS Express.

    Always free shipping for orders over US $250.

    All orders are shipped with a UPS tracking number.

Returns

    Items returned within 14 days of their original shipment date in same as new condition will be eligible for a full refund or store credit.

    Refunds will be charged back to the original form of payment used for purchase.

    Customer is responsible for shipping charges when making returns and shipping/handling fees of original purchase is non-refundable.

    All sale items are final purchases.

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🔹 Overview
The O Seamaster Diver 300M Ref. 210.30.42.20.01.001 is a modern classic, celebrating O’s legacy of ocean exploration since 1993. This 42 mm professional dive watch combines sporty elegance with technical mastery, offering durability, readability, and timeless design for divers, athletes, and adventurers alike.

💎 Key Specifications
Case: Stainless steel, 42 mm, polished and brushed finish
Bezel: Black ceramic with white enamel diving scale, unidirectional
Dial: Black ceramic with laser-engraved wave pattern; skeletonized hands & raised hour markers filled with white Super-LumiNova
Date: Window at 6 o’clock
Crown & Valve: Screw-in crown; helium escape valve at 10 o’clock
Bracelet: Stainless steel with adjustable clasp system
Glass: Scratch-resistant sapphire crystal
Water Resistance: 300 m / 1000 ft

⏱️ Movement
Type: Automatic, O Co-Axial Master Chronometer Calibre 8800
Features: Anti-magnetic (up to 15,000 gauss), METAS-certified chronometer
Power Reserve: ~55 hours
Functions: Hours, minutes, seconds, date

✅ Conclusion
The O Seamaster Diver 300M 42 mm Ref. 210.30.42.20.01.001 embodies professional diving heritage with contemporary refinement. Its robust stainless steel construction, advanced Calibre 8800 movement, unidirectional bezel, and adjustable bracelet make it both a reliable tool and a stylish everyday companion. For those who dare to explore, it combines precision, resilience, and timeless elegance.

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