Side by side

Nivada Grenchen Chronomaster ManualvsSeiko 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.

Nivada Grenchen Chronomaster Manual

Owners praise the Nivada Grenchen Chronomaster Manual as a reasonably sized mechanical chronograph without a module movement. One owner notes the watch sits high on the wrist due to its automatic caseback, leading to some regret. On balance, owners value the Chronomaster Manual for its non-module mechanical chronograph movement in a reasonably sized package.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER's gorgeous, unique red dial and vintage-inspired design, finding it a sturdy and reliable everyday watch. Some owners, however, question the value proposition at around $700 for a solar quartz model, citing its 13-15mm thickness and the 24-hour subdial as drawbacks. Accuracy figures vary, with one owner reporting +1/+2 seconds per day, while another notes the V192 solar movement offers a six-month power reserve. Overall, owners and reviewers find the Seiko Prospex SPEEDTIMER a capable and versatile chronograph, with its striking dial and everyday wearability being the most frequently cited strengths.

From video reviewers

The Seiko Prospex SPEEDTIMER's solar movement provides reliable power without battery replacements and accurate timekeeping, with a claimed accuracy of ±15 seconds per month. A notable trade-off is the watch's slightly thicker profile and somewhat lacking lume brightness. Reviewers disagree on whether the bezel action is smooth and clicky, with one reviewer praising it and the other not mentioning it.

At a glance

13 of 29 specs differ
Diameter
Chronomaster Manual38mm
Prospex SPEEDTIMER39mm
Power Reserve
Chronomaster Manual45h
Prospex SPEEDTIMER
Water Resistance
Chronomaster Manual100m
Prospex SPEEDTIMER100m
MSRP
Chronomaster Manual$1,975
Prospex SPEEDTIMER$725

Full specifications

Case

4 specs
Diameter
38mm
39mm
Thickness
14.55mm
13.3mm
Lug-to-Lug
0mm
45.5mm
Finish
Brushed + Polished

Crystal & Dial

4 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Dial Color
White
Lume
x1
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
ETA Valjoux 7733
V192
Type
Manual
Quartz
Power Reserve
45h
0h
Complications
GMT, Chronograph
None

Pricing

1 specs
MSRP
$1,975
$725
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