Side by side

Bremont Altitude Perpetual Calendar GMTvsSeestern S446 GMT

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
S446 GMT
SeesternS446 GMT
MSRP $299

At a glance

14 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
S446 GMT39.5mm
Power Reserve
Altitude Perpetual Calendar GMT40h
S446 GMT41hh
Water Resistance
Altitude Perpetual Calendar GMT
S446 GMT100m
MSRP
Altitude Perpetual Calendar GMT$38,450
S446 GMT$299

Full specifications

Case

6 specs
Diameter
42mm
39.5mm
Thickness
12.65mm
13mm
Lug-to-Lug
47mm
Lug Width
22mm
20mm
Material
Titanium
316L Stainless Steel
Water Resistance
100m

Crystal & Dial

2 specs
Crystal Shape
Flat
Domed
Dial Color
Blue
Cream

Movement

5 specs
Caliber
Seiko NH34A GMT
Beat Rate
28,800 vph
3 vph
Power Reserve
40h
41hh
Jewels
25
24
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$38,450
$299

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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.

Seestern S446 GMT

Owners widely praise the Seestern S446 GMT for its stunning finishing and extreme value, with a sapphire crystal and adjustable clasp. The winding action is noted as buttery smooth, and the 39.5mm case size is considered very wearable. Some owners, however, flag the lume as a weak point and one owner found the bracelet clasp lacked sufficient micro-adjustment. The Seestern S446 GMT is considered an extreme value for the dollar. Overall, owners rate the Seestern S446 GMT highly for its exceptional finishing and value proposition at its price point.

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