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Nivada Grenchen Chronomaster 38mm Automatic ChronographvsSeiko 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.

Nivada Grenchen Chronomaster 38mm Automatic Chronograph

Owners widely appreciate the Nivada Grenchen Chronomaster 38mm Automatic Chronograph for its perfect 38mm size and faithful vintage reproduction, with one owner finding its worn bezel enhances its appeal. Reviewers praise its unique "baked" tropical dial, which mimics patina without the risks of a vintage piece. However, one owner reported a feeling of poor construction and lighter-than-expected weight, while another regretted the automatic caseback causing the watch to sit high on the wrist. The chronograph's 100m water resistance is noted as a slight limitation. On balance, owners and reviewers rate the Nivada Grenchen Chronomaster 38mm Automatic Chronograph highly for its excellent vintage aesthetic and unique dial that offers the enjoyment of a tropical watch without the associated risks.

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

15 of 29 specs differ
Diameter
Chronomaster 38mm Automatic Chronograph38mm
Prospex SPEEDTIMER Mechanical Chronograph42mm
Power Reserve
Chronomaster 38mm Automatic Chronograph
Prospex SPEEDTIMER Mechanical Chronograph45h
Water Resistance
Chronomaster 38mm Automatic Chronograph100m
Prospex SPEEDTIMER Mechanical Chronograph100m
MSRP
Chronomaster 38mm Automatic Chronograph$2,085
Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

5 specs
Diameter
38mm
42mm
Thickness
15.85mm
14.6mm
Lug-to-Lug
48.5mm
49.5mm
Finish
Brushed + Polished
Caseback
316L Stainless Steel

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

5 specs
Caliber
8R48
Beat Rate
4 vph
0 vph
Power Reserve
0h
45h
Jewels
0
34
Complications
GMT, Chronograph, Small seconds
None

Pricing

1 specs
MSRP
$2,085
$2,500
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