Seiko Seiko 5 Sports Field seriesvsTimefactors Speedbird III PRS-22

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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.

Seiko Seiko 5 Sports Field series at true scale

Seiko 5 Sports Field series

Timefactors Speedbird III PRS-22 at true scale

Speedbird III PRS-22

Diameter

39.4mm

39mm

Lug-to-Lug

48.1mm

46mm

lowest

Thickness

13.2mm

11.7mm

lowest

Water Resistance

100m

100m

Power Reserve

41h

n/a

MSRP

$315

lowest

$651

Movement

Seiko 4R36

Sellita SW200-1

Case

4 specs
Category
Sport
Field
Diameter
39.4mm
39mm
Thickness
13.2mm
11.7mm
Lug-to-Lug
48.1mm
46mm

Crystal & Dial

3 specs
Crystal
Hardlex
Sapphire
Crystal Shape
Curved
n/a
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
Seiko 4R36
Sellita SW200-1
Power Reserve
41h
n/a
Jewels
24
0

Pricing

1 specs
MSRP
$315
$651
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Reviews

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

Seiko 5 Sports Field series

The Seiko 5 Sports Field series is praised for its excellent legibility, featuring fully lumed Arabic numerals and a lumed pearl on the compass bezel. Reviewers note the reliable 4R36 movement and 10 bar water resistance, with some considering the watches good value under 500 euros. The GMT variants, specifically the SSK023 and SSK025, offer an accessible explorer watch with a GMT complication and a fixed 24-hour bezel. Overall, owners and reviewers rate the Seiko 5 Sports Field series highly for its legibility and value proposition.

Timefactors Speedbird III PRS-22

Owners widely praise the Timefactors Speedbird III PRS-22 for its exceptional finishing and casework, often comparing it favorably to much more expensive brands. Specific highlights include the applied indices, substantial lume, comfortable bracelet, and screw-down crown. Some owners note that the watch's short lugs can make strap changes difficult. The movement, a Sellita SW200-1, is generally considered robust for a tool watch, though some owners expressed a preference for alternative movements. Overall, owners rate the Timefactors Speedbird III PRS-22 highly for its value and refined finishing, rivaling watches at significantly higher price points.