Pinion NeutronvsSmiths 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.

Neutron

Speedbird III PRS-22
Diameter
38mm
39mm
Lug-to-Lug
45mm
lowest
46mm
Thickness
11mm
lowest
11.7mm
Water Resistance
100m
100m
Power Reserve
40h
n/a
MSRP
$1,600
n/a
Movement
Sellita SW200-1
Sellita SW200-1
Case
4 specsCrystal & Dial
3 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Pinion Neutron is widely praised for its refined 38mm case design, exceptional dial finishing, and overall build quality. Owners and reviewers alike highlight the detailed guilloché dial as a standout feature. The watch is powered by a Sellita SW200-1 automatic movement, with reported accuracy ranging from ±5 seconds per day. While the case finishing is highly regarded, one owner found the OEM straps to be poor quality and replaced them with an aftermarket option. The Pinion Neutron retails around £1,050-£1,200. Overall, owners and reviewers rate the Pinion Neutron highly for its impressive dial detail and case finishing at its price point.
Owners widely praise the Smiths SPEEDBIRD III PRS-22 for its exceptional finishing and casework, frequently comparing it favorably to higher-end brands, with particular acclaim for its comfortable bracelet and immaculate indices. The watch is consistently lauded for its outstanding value under $1000, with its sterile dial and functional design being key highlights. Some owners note that the lume fades quickly, and one owner found spring bar manipulation challenging due to the short lugs. The movement is a Sellita SW200-1. On balance, owners rate the Smiths SPEEDBIRD III PRS-22 highly for its remarkable finishing and value proposition.
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