Side by side

Bremont Altitude Perpetual Calendar GMTvsYema Superman Slim CMM.20

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

Altitude Perpetual Calendar GMT
BremontAltitude Perpetual Calendar GMT
MSRP $38,450
Superman Slim CMM.20
YemaSuperman Slim CMM.20
MSRP $2,372

At a glance

10 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
Superman Slim CMM.2039mm
Power Reserve
Altitude Perpetual Calendar GMT40h
Superman Slim CMM.2040h
Water Resistance
Altitude Perpetual Calendar GMT
Superman Slim CMM.20300m
MSRP
Altitude Perpetual Calendar GMT$38,450
Superman Slim CMM.20$2,372

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
42mm
39mm
Thickness
12.65mm
9.95mm
Lug Width
22mm
20mm
Material
Titanium
316L Stainless Steel
Water Resistance
300m

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Blue
Black

Movement

1 specs
Caliber
Yema CMM.20

Pricing

1 specs
MSRP
$38,450
$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.

Bremont Altitude Perpetual Calendar GMT

The Bremont Altitude Perpetual Calendar GMT is a highly exclusive piece, with one owner noting its $44,000 price point raises questions about its target audience and suggesting it may be a limited production showpiece. Reviewers highlight its refined Trip-Tick case, now featuring softer curves, a 42mm diameter, and a 12.23mm thickness in grade 2 titanium, though the oversized crowns are flagged as a potential drawback. Overall, owners and reviewers acknowledge the Bremont Altitude Perpetual Calendar GMT as a distinctive, albeit niche, high-complication offering with a notable case refinement.

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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