Side by side

Bremont Altitude Perpetual Calendar GMTvsYema Navygraf CMM.10

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
Navygraf CMM.10
YemaNavygraf CMM.10
MSRP $1,899

At a glance

11 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
Navygraf CMM.1039mm
Power Reserve
Altitude Perpetual Calendar GMT40h
Navygraf CMM.1040h
Water Resistance
Altitude Perpetual Calendar GMT
Navygraf CMM.10100m
MSRP
Altitude Perpetual Calendar GMT$38,450
Navygraf CMM.10$1,899

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
42mm
39mm
Thickness
12.65mm
11mm
Lug-to-Lug
46mm
Lug Width
22mm
19mm
Material
Titanium
316L Stainless Steel
Water Resistance
100m

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Blue
Standard

Movement

1 specs
Caliber
Yema CMM.10

Pricing

1 specs
MSRP
$38,450
$1,899

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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 Navygraf CMM.10

Owners widely report quality control concerns and suspect craftsmanship with the Yema Navygraf, with one user noting crooked text. A reviewer praised the Slim CMM.20 Limited Edition for its stylish, slim profile and classy finishing on a black lacquered enamel dial, though the audible micro-rotor spinning at its price point was a surprise. On balance, the consensus is that while the Yema Navygraf offers a stylish design, potential buyers should be aware of reported quality control issues.

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