Side by side

Hamilton Jazzmaster Maestro 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 Maestro Auto Chrono

Owners widely praise the Hamilton Jazzmaster Maestro Auto Chrono for its dramatic increase in quality and attention to detail, its versatile dial layout suitable for dressing up or down, and its bulletproof build that remains problem-free for years. Accuracy figures range from gaining about 5 seconds per day to keeping time within 10 seconds per day even after extended periods without service. Some owners find the lack of a second hand a deal-breaker, and the 45mm size can be chunky and may not fit under shirt sleeves. Concerns exist regarding the movement's serviceability, high maintenance costs, and intervals. On balance, owners rate the Hamilton Jazzmaster Maestro Auto Chrono highly for its robust build and quality for the price, despite some reservations about its size and serviceability.

From video reviewers

The Valjoux 7750 chronograph movement is cited as a strength. Reviewers noted the movement is not without flaws.

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

12 of 29 specs differ
Diameter
Jazzmaster Maestro Auto Chrono45mm
Prospex SPEEDTIMER42.5mm
Power Reserve
Jazzmaster Maestro Auto Chrono60h
Prospex SPEEDTIMER45h
Water Resistance
Jazzmaster Maestro Auto Chrono100m
Prospex SPEEDTIMER100m
MSRP
Jazzmaster Maestro Auto Chrono$1,995
Prospex SPEEDTIMER$3,000

Full specifications

Case

4 specs
Diameter
45mm
42.5mm
Thickness
15.35mm
15.1mm
Lug-to-Lug
0mm
50mm
Lug Width
23mm
20mm

Crystal & Dial

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

Movement

3 specs
Caliber
Hamilton H-21
Seiko 8R46
Power Reserve
60h
45h
Jewels
0
34

Pricing

1 specs
MSRP
$1,995
$3,000
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Follow this matchup

Get a note when Hamilton Jazzmaster Maestro Auto Chrono vs Seiko Prospex SPEEDTIMER gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.