Side by side

Beaufort AerotimervsSeiko Prospex SPEEDTIMER Mechanical

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Aerotimer
BeaufortAerotimer
MSRP $599
Prospex SPEEDTIMER Mechanical
SeikoProspex SPEEDTIMER Mechanical
MSRP $995
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Beaufort Aerotimer

Owners widely praise the Beaufort Aerotimer for its handsome, high-contrast salmon dial and museum-quality finishing, creating a sharp dress field watch with excellent legibility and a crisp California dial. One owner notes the power reserve is closer to 30-34 hours than advertised and finds the 11.45mm thickness slightly noticeable, while another would change the strap. Lume on the 3 and 9 o'clock markers is reportedly poor. Overall, owners rate the Beaufort Aerotimer highly for its vintage style and beautiful craftsmanship at its price point.

Seiko Prospex SPEEDTIMER Mechanical

The Seiko Prospex SPEEDTIMER Mechanical is praised for its visually appealing design and comfortable wearability, with owners frequently using its chronograph function for daily tasks. Reviewers note its clean dial layout and LumiBrite treated hands and markers, and one source highlights the 72-hour power reserve of the 6R55 movement. However, some owners criticize its chronograph functionality and the 24-hour subdial. On balance, owners and reviewers rate the Seiko Prospex SPEEDTIMER Mechanical highly for its daily usability and refined aesthetics.

At a glance

14 of 29 specs differ
Diameter
Aerotimer40mm
Prospex SPEEDTIMER Mechanical39.5mm
Power Reserve
Aerotimer42h
Prospex SPEEDTIMER Mechanical72h
Water Resistance
Aerotimer100m
Prospex SPEEDTIMER Mechanical200m
MSRP
Aerotimer$599
Prospex SPEEDTIMER Mechanical$995

Full specifications

Case

6 specs
Category
Chronograph
Diameter
40mm
39.5mm
Thickness
11.45mm
12mm
Lug-to-Lug
48.5mm
44.5mm
Lug Width
22mm
20mm
Water Resistance
100m
200m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Navy
Black
Lume
C1 Super-LumiNova applied to 3hr, 6hr, 9hr, and 12hr indices and hands for low-l
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
STP1-11
6R55
Power Reserve
42h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$599
$995
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