Sheffield Allsport Diver 1vsTissot Seastar 1000 GMT
lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures
Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Allsport Diver 1

Seastar 1000 GMT
Diameter
40mm
40mm
Lug-to-Lug
48mm
n/a
Thickness
13mm
11.8mm
lowest
Water Resistance
200m
300m
highest
MSRP
n/a
$575
Movement
Seiko NH35
11.5'
Case
3 specsCrystal & Dial
3 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 Allsport Diver 1 for its superb quality and sturdiness at an affordable price, with one owner noting its scratch resistance despite heavy use. The blue dial is a particular highlight, and the watch is considered a substantial upgrade from entry-level options. Some owners note the bezel action could be crisper, and the lack of a quick-set date is a functional drawback for some. One owner found the caseback exceptionally difficult to remove during servicing. Overall, owners rate the Sheffield Allsport Diver 1 highly for its surprising quality and appearance at its price point.
Owners widely praise the Tissot Seastar 1000 GMT for its sapphire crystal, improved finishing, and GMT complication, with one owner expressing deep satisfaction. A potential drawback noted by the community is that Swiss quartz movements, unlike some Japanese counterparts, may exhibit second hands that do not precisely align with dial markers. On balance, owners rate the Tissot Seastar 1000 GMT highly for its build quality and useful GMT function at its price point.
Similar watches
Matched to the watches above on size, movement, style and price, microbrands first. Open any one to dig in.
Also compared
Comparisons nearby in the catalog: alternatives to the watches above paired against the matchup.










