Side by side

Baltic Hermétique SummervsYema Superman Slim CMM.20

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

Hermétique Summer
BalticHermétique Summer
MSRP $594
Superman Slim CMM.20
YemaSuperman Slim CMM.20
MSRP $2,372

At a glance

13 of 29 specs differ
Diameter
Hermétique Summer37mm
Superman Slim CMM.2039mm
Power Reserve
Hermétique Summer42h
Superman Slim CMM.2040h
Water Resistance
Hermétique Summer150m
Superman Slim CMM.20300m
MSRP
Hermétique Summer$594
Superman Slim CMM.20$2,372

Full specifications

Case

6 specs
Category
Dress
Diver
Diameter
37mm
39mm
Thickness
10.8mm
9.95mm
Lug-to-Lug
46mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
150m
300m

Crystal & Dial

4 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Yes
Inner
Dial Color
Orange
Black
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9039
Yema CMM.20
Power Reserve
42h
40h

Pricing

1 specs
MSRP
$594
$2,372

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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.

Yema Superman Slim CMM.20

Owners and reviewers praise the Yema Superman Slim CMM.20 for its appealing retro design, balanced 39mm case, and in-house CMM.20 micro-rotor movement, with some finding the fish scale bracelet attractive. Concerns exist regarding its $2500/€2,490 MSRP, with some owners questioning its value and noting the potential for QC issues or a "jittery" seconds hand attributed to the new movement. The bracelet's articulation and stamped clasp draw criticism, though some owners report it improves with wear. Overall, owners and reviewers appreciate the Yema Superman Slim CMM.20's vintage styling and unique micro-rotor movement, but its value proposition and some finishing details are points of contention.

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