Side by side

Bremont Altitude Perpetual Calendar GMTvsZelos Nasa Edition (sellita)

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
Nasa Edition (sellita)
ZelosNasa Edition (sellita)
MSRP $629

At a glance

12 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
Nasa Edition (sellita)39mm
Power Reserve
Altitude Perpetual Calendar GMT40h
Nasa Edition (sellita)40h
Water Resistance
Altitude Perpetual Calendar GMT
Nasa Edition (sellita)50m
MSRP
Altitude Perpetual Calendar GMT$38,450
Nasa Edition (sellita)$629

Full specifications

Case

7 specs
Category
GMT
Dress
Diameter
42mm
39mm
Thickness
12.65mm
7.6mm
Lug-to-Lug
39mm
Lug Width
22mm
20mm
Material
Titanium
316L Stainless Steel
Water Resistance
50m

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Blue
NASA Edition (Sellita)

Movement

2 specs
Caliber
ETA/Peseux 7001
Type
Automatic
Manual

Pricing

1 specs
MSRP
$38,450
$629

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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.

Zelos Nasa Edition (sellita)

The Zelos Nasa Edition (sellita) is praised for its thinness, stemming from its hand-wound Sellita SW215 movement, and is noted for its good size and wearability. The watch features a 39mm case, a 45mm lug to lug, and a 20mm lug width. On balance, owners rate the Zelos Nasa Edition (sellita) highly for its comfortable dimensions and thin profile.

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