Bamford of London D-300 Gloss Navy White CeramicvsSeiko Prospex Sea 1968 Heritage Diver's GMT

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Bamford of London D-300 Gloss Navy White Ceramic

Ref. d-300-ceramic·MSRP $1,800

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Buy from Bamford of London Used on eBay

Seiko Prospex Sea 1968 Heritage Diver's GMT

MSRP $1,700

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Buy from Seiko Used on eBay

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

D-300 Gloss Navy White Ceramic

Prospex Sea 1968 Heritage Diver's GMT

Diameter

Across the case, crown excluded.

42mm

Lug-to-Lug

The number that decides fit.

n/a

48.6mm

Thickness

How it sits under a cuff.

13mm

lowest

13.3mm

Water Resistance

Rated in meters.

300m

Power Reserve

How long it runs off the wrist.

n/a

72h

MSRP

Sticker price, new.

$1,800

$1,700

lowest

Movement

What drives the hands.

ETA 2824-2

Seiko 6R54

Spec

D-300 Gloss Navy White Ceramic

Prospex Sea 1968 Heritage Diver's GMT

Case

4 specs

Thickness

13mm

13.3mm

Lug-to-Lug

n/a

48.6mm

Lug Width

22mm

20mm

Material

Ceramic

Stainless Steel

Crystal & Dial

3 specs

AR Coating

n/a

Anti-reflective coating on inner surface

Dial Color

n/a

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

ETA 2824-2

Seiko 6R54

Power Reserve

72h

Jewels

Pricing

1 specs

MSRP

$1,800

$1,700

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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Bamford of London D-300 Gloss Navy White Ceramic

Owners praise the Bamford D-300 Gloss Navy White Ceramic for its tactile bezel, legible dial, and premium feel, noting its ceramic and titanium construction and fun wrist presence. Some reviewers find it offers good value at under $2,000, while one owner considers its £1,800 price tag unjustifiable. Overall, owners and reviewers rate the Bamford D-300 Gloss Navy White Ceramic positively for its tactile bezel and premium feel at its price point.

Time + Tide

Seiko Prospex Sea 1968 Heritage Diver's GMT

Owners and reviewers widely praise the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch for its excellent value, Marinemaster-style build, and comfortable 42mm steel case with a 4:00 crown position. The watch features a refined clasp with an impressive 15mm of micro-adjustment and a caller-style GMT complication. While the 6R54 movement's stated accuracy is +25 to -15 seconds per day, real-world performance is often found to be better. The watch is priced at $1,700 USD. Overall, owners and reviewers rate the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch highly for its attractive design and robust build quality at its price point.