Side by side

Sternglas Naos GroßdatumvsSinn U50 HYDRO SDR with TEGIMENT option

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

Naos Großdatum
SternglasNaos Großdatum
MSRP $323
U50 HYDRO SDR with TEGIMENT option
SinnU50 HYDRO SDR with TEGIMENT option
MSRP $3,110

At a glance

17 of 29 specs differ
Diameter
Naos Großdatum38mm
U50 HYDRO SDR with TEGIMENT option41mm
Power Reserve
Naos Großdatum
U50 HYDRO SDR with TEGIMENT option40h
Water Resistance
Naos Großdatum50m
U50 HYDRO SDR with TEGIMENT option5,000m
MSRP
Naos Großdatum$323
U50 HYDRO SDR with TEGIMENT option$3,110

Full specifications

Case

7 specs
Category
Dress
Diver
Diameter
38mm
41mm
Thickness
10mm
11.8mm
Lug-to-Lug
42mm
Finish
Brushed and polished
bead-blasted
Water Resistance
50m
5000m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Underside
Dial Color
Black
Indices
Applied
Lume
Luminova Punkten
Luminescent

Movement

4 specs
Caliber
Seiko VJ76
Ronda 715 Li - SWISS MADE
Power Reserve
40h
Jewels
5
Complications
None
Date

Pricing

1 specs
MSRP
$323
$3,110

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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.

Sinn U50 HYDRO SDR with TEGIMENT option

The Sinn U50 HYDRO SDR with TEGIMENT option is widely praised for its exceptional scratch resistance and legibility, with owners reporting no signs of wear after extended use. The oil-filled case contributes to extreme water resistance and a clear dial, while the fully tegimented construction offers a soft feel on the wrist. Reviewers note the compact 41mm size, though one owner found it did not wear as thin as expected due to its thickness. The lume is considered underwhelming by some, and the diving extension on the clasp can release too easily. It utilizes a quartz movement, which is noted as less accurate than previous thermo-compensated options. Overall, owners and reviewers rate the Sinn U50 HYDRO SDR with TEGIMENT option highly for its robust, legible, and virtually indestructible build at its price point.

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