Astor + Banks Fortitude ProvsCitizen Series 8 831
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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.

Fortitude Pro

Series 8 831
Diameter
38.5mm
40mm
Lug-to-Lug
45.5mm
n/a
Thickness
11.9mm
n/a
Water Resistance
200m
highest
100m
Power Reserve
n/a
42h
MSRP
$675
lowest
$1,095
Movement
Miyota 9015
Miyota 9051
Case
5 specsCrystal & Dial
2 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners and reviewers widely praise the Astor + Banks Fortitude Pro for its top-tier build quality and fit and finish, especially considering its price point and microbrand origin. Specific strengths highlighted include its scratch-resistant coating, versatile white dial, thin 38.5mm case, and good timekeeping. One owner notes the bracelet clasp is considered dated, and a reviewer points out the date numeral is often in half shadow due to anti-magnetic shielding. The Astor + Banks Fortitude Pro features a Miyota 9015 movement and 200m water resistance. On balance, owners and reviewers rate the Astor + Banks Fortitude Pro highly for its excellent build quality and wearability at its price point.
Owners widely praise the Citizen Series 8 831 for its impressive finishing and textured dials, with the blue dial and bracelet play of light specifically noted as luxurious and comfortable on the wrist. The watch utilizes the Miyota 9051 automatic movement, offers 100m water resistance, and features a 40mm case. Accuracy is reported between -10 to +20 seconds per day with a 42-hour power reserve. On balance, owners and reviewers rate the Citizen Series 8 831 highly for its luxurious feel and dial finishing at its price point.
The case finishing, with its contrasting brushed and polished surfaces, is a notable strength. The 40mm case size and comfortable fit are also consistently mentioned. Reviewers did not reach a consensus on any weaknesses.
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