Side by side

Hamilton Jazzmaster 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 Jazzmaster Auto Chrono

Owners widely praise the Hamilton Jazzmaster Auto Chrono for its value and dressy yet substantial look. The H-31 or adapted 7753 movement is noted, alongside a 60-hour power reserve. Some owners prefer a 3-6-9 subdial layout or a smaller case size, and the movement's thickness makes it unsuitable for those seeking a slim watch. On balance, owners rate the Hamilton Jazzmaster Auto Chrono highly for its value and refined aesthetic.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER for its unique dial colors and vintage-inspired design, with many appreciating its compact 39mm case size and 100m or 200m water resistance. Reviewers and owners note the V192 solar movement’s power reserve indicator and its reliability, though some owners express a preference for automatic movements. One owner finds the $700 price for a solar quartz model expensive, while another criticizes the €860 price point and desires a thinner case and a bracelet with quick-release or micro-adjustment. On balance, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER for its distinctive aesthetic and versatile wearability, despite some reservations about its price and case thickness.

At a glance

12 of 29 specs differ
Diameter
Jazzmaster Auto Chrono42mm
Prospex SPEEDTIMER42mm
Power Reserve
Jazzmaster Auto Chrono60h
Prospex SPEEDTIMER
Water Resistance
Jazzmaster Auto Chrono100m
Prospex SPEEDTIMER100m
MSRP
Jazzmaster Auto Chrono$2,095
Prospex SPEEDTIMER$2,200

Full specifications

Case

3 specs
Thickness
15.23mm
12.9mm
Lug-to-Lug
0mm
49.6mm
Lug Width
22mm
20mm

Crystal & Dial

4 specs
Crystal Shape
Curved
AR Coating
Super-clear coating
Dial Color
Black
Lume
None
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
H-21
5X83
Type
Automatic
Quartz
Power Reserve
60h
0h
Jewels
0
14

Pricing

1 specs
MSRP
$2,095
$2,200
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