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O Seamaster DIVER 300M

$1,472.00 $349.00

🔹 OverviewThe O Seamaster Diver 300M Chronograph Ref. 210.30.44.51.06.001 is born from the deep and built to conquer. Since its debut in 1993, the Diver 300M has earned a reputation for technical innovation and ocean-ready durability. This 44 mm chronograph version amplifies the legacy with commanding presence, a refined wave-pattern...

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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.

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    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 Chronograph Ref. 210.30.44.51.06.001 is born from the deep and built to conquer. Since its debut in 1993, the Diver 300M has earned a reputation for technical innovation and ocean-ready durability. This 44 mm chronograph version amplifies the legacy with commanding presence, a refined wave-pattern dial, and unmatched diving performance — embodying precision, strength, and modern elegance.

💎 Key Specifications
Reference: 210.30.44.51.06.001
Case: 44 mm stainless steel
Bezel: Polished blue ceramic with white enamel diving scale, unidirectional
Dial: Sun-brushed PVD chrome dial with laser-engraved wave pattern, two blue chronograph subdials
Indexes & Hands: Rhodium-plated, filled with white Super-LumiNova, skeletonized hands for legibility
Crystal: Scratch-resistant sapphire with anti-reflective treatment
Bracelet & Clasp: Stainless steel bracelet with extendable foldover rack-and-pusher clasp and micro-adjustment
Chronograph Functions: Small seconds at 9 o’clock, 12-hour + 60-minute totalizer at 3 o’clock
Water Resistance: 300 m / 1000 ft, screw-in crown, helium escape valve

⏱️ Movement
Type: Perpetual, mechanical, self-winding
Caliber: O Co-Axial Master Chronometer Calibre 9900
Certification: METAS Master Chronometer, resistant to magnetic fields up to 15,000 gauss
Features: Column wheel and vertical clutch for smooth chronograph operation, central hours, minutes, chronograph seconds, date at 6 o’clock
Power Reserve: ~60 hours via twin-barrel system
Finishing: Geneva waves in arabesque, blackened screws, fine decoration visible through sapphire caseback

✅ Conclusion
The O Seamaster Diver 300M Chronograph Ref. 210.30.44.51.06.001 is the ultimate fusion of technical performance and deep-water style. Its stainless steel construction, blue ceramic elements, and wave-motif dial create an iconic maritime aesthetic, while the advanced Calibre 9900 ensures unmatched precision and reliability. Whether for professional diving or adventurous everyday wear, this timepiece is a bold statement of O’s mastery in ocean-inspired watchmaking.

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