Side by side

Bremont Altitude Perpetual Calendar GMTvsSeiko Prospex SPEEDTIMER

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
Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $3,000

At a glance

15 of 29 specs differ
Diameter
Altitude Perpetual Calendar GMT42mm
Prospex SPEEDTIMER42.5mm
Power Reserve
Altitude Perpetual Calendar GMT40h
Prospex SPEEDTIMER45h
Water Resistance
Altitude Perpetual Calendar GMT
Prospex SPEEDTIMER100m
MSRP
Altitude Perpetual Calendar GMT$38,450
Prospex SPEEDTIMER$3,000

Full specifications

Case

7 specs
Category
GMT
Chronograph
Diameter
42mm
42.5mm
Thickness
12.65mm
15.1mm
Lug-to-Lug
50mm
Lug Width
22mm
20mm
Material
Titanium
Stainless Steel
Water Resistance
100m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
8R46
Power Reserve
40h
45h
Jewels
25
34

Pricing

1 specs
MSRP
$38,450
$3,000

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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.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER for its attractive vintage-inspired design and compact 39mm size, with one owner finding the red dial unique and gorgeous. Reviewers and owners note the solar-powered quartz movement, with one owner considering $700 expensive for this specification and another wishing for a thinner case. The SPEEDTIMER is described as a sturdy and reliable everyday watch, though one owner questioned its resale value. Overall, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER for its stylish, compact design and solar functionality, despite some finding the price point and case thickness slightly high.

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