Side by side

Bremont Altitude Perpetual Calendar GMTvsZelos Helica Moonphase

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
Helica Moonphase
ZelosHelica Moonphase
MSRP $1,049

At a glance

10 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
Helica Moonphase39mm
Power Reserve
Altitude Perpetual Calendar GMT40h
Helica Moonphase40h
Water Resistance
Altitude Perpetual Calendar GMT
Helica Moonphase100m
MSRP
Altitude Perpetual Calendar GMT$38,450
Helica Moonphase$1,049

Full specifications

Case

7 specs
Category
GMT
Moonphase
Diameter
42mm
39mm
Thickness
12.65mm
10mm
Lug-to-Lug
39mm
Lug Width
22mm
20mm
Material
Titanium
316L Stainless Steel
Water Resistance
100m

Crystal & Dial

1 specs
Dial Color
Blue
Meteorite

Movement

1 specs
Caliber
Sellita SW288 Moonphase

Pricing

1 specs
MSRP
$38,450
$1,049

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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 Helica Moonphase

Owners widely praise the Zelos Helica Moonphase for its gorgeous aventurine dial, unique industrial-dress aesthetic, and comfortable wearability, with one owner calling it spectacular and another their favorite Zelos. The moonphase complication is frequently highlighted as beautiful, though some find the double moon distracting or the dial cluttered. A manual-wind movement combined with a screw-down crown is noted as a drawback by some, requiring adjustment and potentially feeling fragile when fully wound, while one owner reports a 43-hour power reserve. On balance, owners rate the Zelos Helica Moonphase highly for its stunning aventurine dial and unique design at its price point.

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