Side by side

Hamilton Jazzmaster Lord Hamilton Auto ChronovsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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 Lord Hamilton Auto Chrono

Owners widely praise the Hamilton Jazzmaster Lord Hamilton Auto Chrono for its clean, classic, and highly legible dial, with one noting its lume charges quickly and brightly. Stellar timekeeping is reported, with one owner seeing +2 or 3 seconds per day. The watch is described as bridging the gap between casual and dressy, and comfortable for its size. However, one owner found the watch felt "kind of cheap" and was "honestly not that happy with it," while another questioned Hamilton's quality control after receiving a watch with a dial blemish and a temporarily broken day/date function. Some owners express skepticism about the $650 price point, with one suggesting they would only pay $250. The stock leather band is described as nice but stiff, and the lugs are shorter than preferred by one owner. The watch features a sapphire crystal with great anti-reflective coating and a modified Valjoux 7750 movement with extra power reserve.

Seiko Prospex SPEEDTIMER Mechanical Chronograph

The Seiko Prospex SPEEDTIMER Mechanical Chronograph is praised for its handsome, heritage-inspired design with a clean, balanced dial and an external tachymeter bezel. Reviewers highlight the upgraded case and bracelet, noting improved comfort and good value for a well-designed chronograph with an in-house movement. The caliber 8R48 movement features a vertical clutch and column wheel with MEMS technology for durability and precision. Points to consider include the 4:30 date window and a 14.6mm thickness, while the 45-hour power reserve is noted as an area for potential improvement. On balance, reviewers find the Seiko Prospex SPEEDTIMER Mechanical Chronograph to be a solid offering with good value, particularly for its design and in-house movement.

At a glance

12 of 29 specs differ
Diameter
Jazzmaster Lord Hamilton Auto Chrono46mm
Prospex SPEEDTIMER Mechanical Chronograph42mm
Power Reserve
Jazzmaster Lord Hamilton Auto Chrono60h
Prospex SPEEDTIMER Mechanical Chronograph45h
Water Resistance
Jazzmaster Lord Hamilton Auto Chrono100m
Prospex SPEEDTIMER Mechanical Chronograph100m
MSRP
Jazzmaster Lord Hamilton Auto Chrono$1,695
Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

4 specs
Diameter
46mm
42mm
Thickness
15.25mm
14.6mm
Lug-to-Lug
0mm
49.5mm
Lug Width
24mm
20mm

Crystal & Dial

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

Movement

3 specs
Caliber
H-21
8R48
Power Reserve
60h
45h
Jewels
0
34

Pricing

1 specs
MSRP
$1,695
$2,500
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