Grand Seiko SBGM245vsUndone Basecamp Collector

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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.

Grand Seiko SBGM245 at true scale

SBGM245

Undone Basecamp Collector at true scale

Basecamp Collector

Diameter

40.5mm

40mm

Lug-to-Lug

48.6mm

n/a

Thickness

14.4mm

n/a

Water Resistance

200m

highest

100m

Power Reserve

72h

n/a

MSRP

$6,100

$695

lowest

Movement

Grand Seiko 9S66

Seiko NH34

Case

6 specs
Diameter
40.5mm
40mm
Thickness
14.4mm
n/a
Lug-to-Lug
48.6mm
n/a
Lug Width
20mm
n/a
Material
Stainless Steel
Titanium
Water Resistance
200m
100m

Crystal & Dial

2 specs
AR Coating
Yes
n/a
Dial Color
n/a
n/a

Movement

2 specs
Caliber
Grand Seiko 9S66
Seiko NH34
Power Reserve
72h
0h

Pricing

1 specs
MSRP
$6,100
$695
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Reviews

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

Grand Seiko SBGM245

Owners widely praise the Grand Seiko SBGM245 as a compelling mechanical GMT, blending sport and luxury with notable workmanship. Some owners find its 40.5mm case size and 14.4mm thickness wearable, while others consider it too large and prefer slimmer alternatives. The polished surfaces are noted to scratch easily, suggesting it is best suited for dressier occasions. Accuracy figures vary, with one owner reporting an average gain of two seconds per day, while others express a desire for a thinner case and a clasp with quick extension. Overall, owners rate the Grand Seiko SBGM245 highly for its mechanical GMT functionality and craftsmanship, despite some reservations about its size and scratch resistance.

Undone Basecamp Collector

Owners widely praise the Undone Basecamp Collector for its attractive, vintage-inspired design and excellent value, with reviewers highlighting its well-finished 40mm steel case that feels comfortable and versatile, offering excellent polishing for its price. Some owners report strong accuracy around 20 seconds off per week, and the Seiko NH34 automatic movement provides confidence. The watch features a bi-directional bezel with good friction, and some variants offer dual luminant colors and unique dials. However, the mineral crystal can cause glare, and the ultra-domed polycarbonate crystal, while contributing to an "instant vintage feeling," may present durability concerns for some. The 40mm case has short lugs that make it wear noticeably smaller, which may be outside the ideal range for some despite larger wrists. Overall, owners and reviewers rate the Undone Basecamp Collector highly for its vintage aesthetic and strong value proposition at its price point.

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