Side by side

Hamilton American Classic Intra-Matic Auto ChronovsSeiko Prospex SPEEDTIMER

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

What people say

Owners + reviewers, side by side

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

Hamilton American Classic Intra-Matic Auto Chrono

Owners widely praise the Hamilton American Classic Intra-Matic Auto Chrono for its historically significant retro design, clean panda dial, and value, with many noting its comfortable wearability and how it garners compliments. Reviewers and owners alike highlight its attractive dial with well-placed sub-registers and polished indices, evoking a vintage charm. Some owners find the 14mm+ case thickness substantial, though others note it wears smaller than expected and fits under shirt cuffs. The H-31 movement's rotor is described as spinny by one owner, and accuracy figures range from +3 to +8 seconds per day, with one owner noting the OEM strap is utilitarian. On balance, owners and reviewers rate the Hamilton American Classic Intra-Matic Auto Chrono highly for its vintage aesthetic and value proposition.

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.

At a glance

11 of 29 specs differ
Diameter
American Classic Intra-Matic Auto Chrono40mm
Prospex SPEEDTIMER42.5mm
Power Reserve
American Classic Intra-Matic Auto Chrono60h
Prospex SPEEDTIMER45h
Water Resistance
American Classic Intra-Matic Auto Chrono100m
Prospex SPEEDTIMER100m
MSRP
American Classic Intra-Matic Auto Chrono$2,645
Prospex SPEEDTIMER$3,000

Full specifications

Case

3 specs
Diameter
40mm
42.5mm
Thickness
14.45mm
15.1mm
Lug-to-Lug
0mm
50mm

Crystal & Dial

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

Movement

3 specs
Caliber
H-31
8R46
Power Reserve
60h
45h
Jewels
0
34

Pricing

1 specs
MSRP
$2,645
$3,000
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