Sheffield 1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)vsTissot Seastar 1000
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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.

1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap)

Seastar 1000
Diameter
38mm
40mm
Lug-to-Lug
46mm
n/a
Thickness
12.8mm
12.5mm
lowest
Water Resistance
200m
300m
highest
Power Reserve
n/a
80h
MSRP
$238
lowest
$875
Movement
Seiko NH35
Tissot Powermatic 80
Case
4 specsCrystal & Dial
4 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Sheffield 1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap) for its superb quality and value, with many calling it a no-brainer purchase. Some owners note the bezel action could be crisper, and one user found shipping fees expensive, though the watch itself was considered on point. The Sheffield 1A 38 dive 38mm, 3-hand date (rotating dive bezel, perforated rubber strap) is reported to keep good time at +5-7 seconds per day. On balance, owners rate the Sheffield 1A 38 dive 38mm, 3-hand date (rotating dive dive bezel, perforated rubber strap) highly for its exceptional quality and affordability.
Owners widely praise the Tissot Seastar 1000 for its value and solid build, with one reviewer calling it a comfortable, sporty, and affordable everyday watch with a great case and dial ratio. However, some owners find the Tissot Seastar 1000 too large and poorly proportioned, citing small indices on larger dials and a difficult-to-read bezel. Criticisms also include a non-reflective crystal causing glare, mediocre lume, and a subpar bracelet, with some feeling it is underwhelming for the price compared to other divers. Overall, owners rate the Tissot Seastar 1000 highly for its value and solid build at the price point.
The 80-hour power reserve from the Powermatic 80 movement is a significant strength. Reviewers did not reach a consensus on any weaknesses.
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