Side by side

Baltic Hermétique SummervsGrand Seiko SBGW258

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Hermétique Summer
BalticHermétique Summer
MSRP $594
SBGW258
Grand SeikoSBGW258
MSRP $26,000

At a glance

12 of 29 specs differ
Diameter
Hermétique Summer37mm
SBGW25838mm
Power Reserve
Hermétique Summer42h
SBGW25872h
Water Resistance
Hermétique Summer150m
SBGW25830m
MSRP
Hermétique Summer$594
SBGW258$26,000

Full specifications

Case

6 specs
Diameter
37mm
38mm
Thickness
10.8mm
10.9mm
Lug-to-Lug
46mm
45.8mm
Lug Width
20mm
19mm
Material
Stainless Steel
Gold
Water Resistance
150m
30m

Crystal & Dial

2 specs
Dial Color
Orange
Black
Lume
BGW9
None

Movement

3 specs
Caliber
Miyota 9039
9S64
Type
Automatic
Manual
Power Reserve
42h
72h

Pricing

1 specs
MSRP
$594
$26,000

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What people say

Owners + reviewers, side by side

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

Baltic Hermétique Summer

Reviewers highlight the Baltic Hermétique Summer's compact 37mm brushed case with a polished bezel and 150 meters of water resistance. The watch features glossy dials in bright colors with raised BGW9 Super-LumiNova indices that emit a strong blue glow, and it comes with color-matched FKM rubber straps or Baltic bracelets. The Miyota 9039 movement supports hacking and hand-winding. However, the recessed crown can be difficult to manipulate if fingernails are not long enough, and the movement has a stated accuracy of -10/+30 seconds per day. Overall, reviewers praise the Baltic Hermétique Summer for its well-balanced, colorful dials and strong lume at an affordable price point.

Grand Seiko SBGW258

The Grand Seiko SBGW258 is a yellow gold dress watch featuring a 38mm case and a manual-wind caliber 9S64 movement with a 72-hour power reserve, rated for accuracy to +5/-3 seconds per day. It includes a raised gold logo on the dial and comes with a brown leather strap. On balance, reviewers highlight the Grand Seiko SBGW258 as a classic, precious metal timepiece representing fine watchmaking tradition.

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