Side by side

Seiko Prospex SPEEDTIMER Mechanical ChronographvsZelos Aurora Moonphase

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.

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.

Zelos Aurora Moonphase

Owners widely praise Zelos for offering excellent value, solid build quality, and enthusiast-friendly designs, with unique dial variants often selling out quickly. The Zelos Aurora Moonphase is noted as a desirable model, though finding one can be challenging. Some owners find Zelos's designs, including those of the Aurora line, to be too flashy for everyday wear, preferring a more subdued aesthetic. One owner reported their Zelos Aurora Nebula 38mm running at -5.3 seconds per day. Overall, owners rate the Zelos Aurora Moonphase highly for its desirable microbrand status and unique dial appeal.

At a glance

14 of 29 specs differ
Diameter
Prospex SPEEDTIMER Mechanical Chronograph42mm
Aurora Moonphase39mm
Power Reserve
Prospex SPEEDTIMER Mechanical Chronograph45h
Aurora Moonphase
Water Resistance
Prospex SPEEDTIMER Mechanical Chronograph100m
Aurora Moonphase200m
MSRP
Prospex SPEEDTIMER Mechanical Chronograph$2,500
Aurora Moonphase$949

Full specifications

Case

6 specs
Category
Chronograph
Moonphase
Diameter
42mm
39mm
Thickness
14.6mm
12.5mm
Lug-to-Lug
49.5mm
39mm
Material
Stainless Steel
Titanium
Water Resistance
100m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko 8R48
Sellita SW288-1
Power Reserve
45h
0h
Jewels
34
0

Pricing

1 specs
MSRP
$2,500
$949
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