Henry Archer TidevandvsSeiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition

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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.

Henry Archer Tidevand at true scale

Tidevand

Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition at true scale

Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition

Diameter

40mm

40mm

Lug-to-Lug

47mm

46.4mm

lowest

Thickness

10.7mm

lowest

13mm

Water Resistance

200m

300m

highest

Power Reserve

n/a

72h

MSRP

$652

lowest

$1,400

Movement

Miyota 9015

Seiko 6R55

Case

4 specs
Thickness
10.65mm
13mm
Lug-to-Lug
47mm
46.4mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

4 specs
Crystal Shape
n/a
Curved
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
Grey
n/a
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 9015
Seiko 6R55
Power Reserve
0h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$652
$1,400
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Reviews

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

Henry Archer Tidevand

Owners widely praise the Henry Archer Tidevand for its exceptional finishing, noting wonderful brushing and beveled polished edges, alongside a spectacular Aventurine dial that evokes a sense of space. Lume is also a standout feature, described as "off the charts" even on the date wheel numerals. The watch is recognized as a purpose-built dive watch with a 120-click bezel and strong nighttime visibility, balancing rugged construction with refined finishing. One owner reported tight bracelet push pins, which was resolved by customer service. The 40mm case is noted as being 10.65mm thin. On balance, owners rate the Henry Archer Tidevand highly for its striking Aventurine dial and excellent lume at its price point.

From video reviewers

The unique gemstone dial is a standout feature. The polished tungsten bezel is a fingerprint magnet. Reviewers disagreed on the practicality of an all-orange watch for daily wear.

Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition

Owners and reviewers praise the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition for its compact 40mm case and improved 300-meter water resistance. The new Caliber 6R55 movement offers a 72-hour power reserve, though some owners express disappointment with its accuracy compared to ETA movements, while others accept it given Seiko's strong dial design. Press images show a disjointed fit on the bracelet's end links. Overall, owners and reviewers rate the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition highly for its design and wearability, despite some reservations about the movement's accuracy.

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