Aigi Watches GruvebusvsBreitling Superocean Heritage B31 Automatic

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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.

Gruvebus

Superocean Heritage B31 Automatic
Diameter
40mm
42mm
Thickness
12.3mm
12.0mm
lowest
Water Resistance
200m
200m
Power Reserve
n/a
78h
MSRP
$1,095
lowest
$6,500
Movement
Sellita SW200-1
Breitling B31
Case
5 specsCrystal & Dial
1 specsMovement
4 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Aigi Watches GRUVEBUS for its legibility and the unique coal-pressed dial motif, with some comparing its character to Grand Seiko. The watch features GTLS tubes for luminescence and a hardened steel 40mm case, powered by a Sellita SW200-1 automatic movement and offering 200m water resistance. Some owners report receiving the watch with a Miyota 9015 movement upgrade. One owner notes the Jubilee-style bracelet as a luxurious touch for a tool watch, while another finds the 40mm case size and 49mm lug-to-lug measurement to be chunky. On balance, owners and reviewers find the Aigi Watches GRUVEBUS to be a decent tool watch for its price, with its unique dial and legibility being key strengths.
Owners widely praise the Breitling Superocean Heritage B31 Automatic for its revived, characterful design embracing '50s charm and its comfortable fit, with some finding the 42mm case size preferable to larger options. Reviewers highlight the new B31 automatic movement, noting its 78-hour power reserve and COSC certification, along with stylish Milanese bracelets and a thinner, more ergonomic case. Some owners find the watch to be the heaviest they own but also the most comfortable, with lugs that hug the wrist. However, the pared-back dive bezel is noted by some as potentially impacting legibility, and the white date wheel at 6 o'clock could be divisive. Criticism is directed at the movement at its price point by some community members, while others appreciate its quality and COSC certification. On balance, owners and reviewers rate the Breitling Superocean Heritage B31 Automatic highly for its revived design and comfortable wearability, supported by its new B31 automatic movement.
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