Side by side

Sternglas Naos GroßdatumvsSeiko Prospex SPEEDTIMER

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Naos Großdatum
SternglasNaos Großdatum
MSRP $323
Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $2,200
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Sternglas Naos Großdatum

The Sternglas Naos Großdatum is praised for its Bauhaus aesthetic and value, with one owner finding it an affordable alternative to other designs. However, some owners report it feels underwhelming and cheap, with a printed-on face, small font, and toy-like hands, and find the strap to be of poor quality. The watch features a 38mm stainless steel case, an Alabaster dial with beige LumiNova, and a Seiko TMI VJ76 quartz movement rated for -20/+20 seconds per month. On balance, owners and reviewers are divided, with the primary point of contention being the perceived quality and aesthetic execution of the Sternglas Naos Großdatum.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER for its unique dial colors and vintage-inspired design, with many appreciating its compact 39mm case size and 100m or 200m water resistance. Reviewers and owners note the V192 solar movement’s power reserve indicator and its reliability, though some owners express a preference for automatic movements. One owner finds the $700 price for a solar quartz model expensive, while another criticizes the €860 price point and desires a thinner case and a bracelet with quick-release or micro-adjustment. On balance, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER for its distinctive aesthetic and versatile wearability, despite some reservations about its price and case thickness.

At a glance

13 of 29 specs differ
Diameter
Naos Großdatum38mm
Prospex SPEEDTIMER42mm
Power Reserve
Naos Großdatum
Prospex SPEEDTIMER40h
Water Resistance
Naos Großdatum50m
Prospex SPEEDTIMER100m
MSRP
Naos Großdatum$323
Prospex SPEEDTIMER$2,200

Full specifications

Case

5 specs
Category
Dress
Chronograph
Diameter
38mm
42mm
Thickness
10mm
12.9mm
Lug-to-Lug
42mm
49.6mm
Water Resistance
50m
100m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Super-clear coating
Dial Color
Black
Lume
Luminova Punkten
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Seiko VJ76
5X83
Power Reserve
40h
Jewels
14

Pricing

1 specs
MSRP
$323
$2,200
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