Side by side

Sheffield 1A 38vsSeiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

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

1A 38
Sheffield1A 38
MSRP $238
What people say

Owners + reviewers, side by side

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

Sheffield 1A 38

Sheffield 1A 38 owners praise its superb quality, sturdiness, and amazing price, with some feeling it is more substantial than a Seiko 5. One owner notes the bezel action could be crisper. Shipping fees are considered too expensive. Overall, owners rate the Sheffield 1A 38 highly for its quality and value at the affordable price point.

Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

Owners widely praise the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition for its unique dial color and execution, with one owner noting its 44mm lug-to-lug measurement is perfect for most wrists. The dial is inspired by Okinawa's ocean colors and is expected to feature a bright sunburst effect. Accuracy figures for the 6R35 movement range from -10/+10 seconds per day when off/on the wrist, which some find "pretty amazing." However, some owners consider the price of around 1500€ too high, suggesting a value closer to 900€, and there are mixed reports on the 6R movement's accuracy. Overall, owners rate the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition highly for its distinctive dial and wearability, despite some reservations about its price point.

At a glance

11 of 29 specs differ
Diameter
1A 3838mm
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition40.5mm
Power Reserve
1A 38
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition70h
Water Resistance
1A 38200m
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition200m
MSRP
1A 38$238
Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition$1,250

Full specifications

Case

3 specs
Diameter
38mm
40.5mm
Thickness
12.8mm
13.2mm
Lug-to-Lug
46mm
47.6mm

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Seiko NH35
6R35
Power Reserve
70h
Jewels
25
24

Pricing

1 specs
MSRP
$238
$1,250
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