Side by side

Baltic Hermétique SummervsGrand Seiko SBGH347

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

Hermétique Summer
BalticHermétique Summer
MSRP $594
SBGH347
Grand SeikoSBGH347
MSRP $7,300

At a glance

9 of 29 specs differ
Diameter
Hermétique Summer37mm
SBGH34737mm
Power Reserve
Hermétique Summer42h
SBGH34755h
Water Resistance
Hermétique Summer150m
SBGH347100m
MSRP
Hermétique Summer$594
SBGH347$7,300

Full specifications

Case

4 specs
Thickness
10.8mm
13.3mm
Lug-to-Lug
46mm
44.6mm
Lug Width
20mm
19mm
Water Resistance
150m
100m

Crystal & Dial

2 specs
Dial Color
Orange
Black
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9039
9S85
Power Reserve
42h
55h

Pricing

1 specs
MSRP
$594
$7,300

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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 SBGH347

The Grand Seiko SBGH347 is lauded for its refined 37mm Ever-Brilliant Steel case, impressive Zaratsu polishing, and classy ice-blue dial inspired by frozen waterfalls. Its Hi-Beat 9S85 movement is a significant draw, and the framed date window is preferred over a cyclops. Reviewers note the bracelet lacks micro-adjustment or a quick-change system, and some wished the 13.3mm thickness was slightly thinner on the compact case. Overall, reviewers praise the Grand Seiko SBGH347 for its elevated finish and value, with the Hi-Beat movement being a significant draw.

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