Side by side

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited EditionvsGrand Seiko SLGW007

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

SLGW007
Grand SeikoSLGW007
MSRP $10,000

At a glance

13 of 29 specs differ
Diameter
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm
SLGW00738.6mm
Power Reserve
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h
SLGW00780h
Water Resistance
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m
SLGW00730m
MSRP
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300
SLGW007$10,000

Full specifications

Case

5 specs
Category
Diver
Dress
Diameter
44mm
38.6mm
Thickness
13mm
9.95mm
Lug-to-Lug
49.3mm
45mm
Water Resistance
200m
30m

Crystal & Dial

3 specs
Crystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Yes
Lume
LumiBrite on hands, index(es) and bezel
None

Movement

4 specs
Caliber
8L35
9SA4
Type
Automatic
Manual
Power Reserve
50h
80h
Jewels
26
25

Pricing

1 specs
MSRP
$3,300
$10,000

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What people say

Owners + reviewers, side by side

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

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

Owners widely praise the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition for its attractive, well-made design and gorgeous dial, noting its jewel-toned teal color and rippling-water pattern. The bezel action is smooth with a muted sound, and the case and bracelet offer a more comfortable feel than previous iterations. However, multiple owners express disappointment with the accuracy of the 6R movement at its price point, with some noting theirs runs slow, and consider the price too high. The steep rehaut and marker size make the 24-hour numbers difficult to read, and some find the case design makes the watch feel top-heavy despite wearing smaller. Overall, owners rate the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition highly for its striking dial and refined case design, despite concerns regarding movement accuracy at its price.

Grand Seiko SLGW007

Grand Seiko SLGW007 owners and reviewers praise its compact 38.6mm x 9.95mm Evolution 9 case and the textured "Moonlit Birch" dial, described as moody, elegant, and captivating. The technically credible 9SA4 hand-wound movement with an 80-hour power reserve is also highlighted. Its 30m water resistance and lack of lume are noted as appropriate for a dress watch. Overall, owners and reviewers rate the Grand Seiko SLGW007 highly for its refined case, captivating dial, and updated movement.

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