Side by side

Baltic Hermétique SummervsFormex Reef 39.5 mm

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

Hermétique Summer
BalticHermétique Summer
MSRP $594
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

12 of 29 specs differ
Diameter
Hermétique Summer37mm
Reef 39.5 mm39.5mm
Power Reserve
Hermétique Summer42h
Reef 39.5 mm56h
Water Resistance
Hermétique Summer150m
Reef 39.5 mm300m
MSRP
Hermétique Summer$594
Reef 39.5 mm$2,230

Full specifications

Case

6 specs
Category
Dress
Diver
Diameter
37mm
39.5mm
Thickness
10.8mm
11mm
Lug-to-Lug
46mm
45.5mm
Lug Width
20mm
22mm
Water Resistance
150m
300m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Orange
Bahama Blue
Lume
BGW9
Super-LumiNova

Movement

2 specs
Caliber
Miyota 9039
Sellita SW300-1
Power Reserve
42h
56h

Pricing

1 specs
MSRP
$594
$2,230

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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.

Formex Reef 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

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