Side by side

Seiko Prospex SeavsSinn U50 SDR with TEGIMENT option

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 Sea

Owners widely praise the Seiko Prospex Sea for its excellent lume, robust build, and value, with many highlighting the comfortable 4 o'clock crown and reliable movements. Reviewers note impressive case finishing and attractive dials, with specific models lauded for their gradient blue designs and smooth bezel actions. Accuracy figures vary, with one owner reporting +9 seconds/day after demagnetization, while others find the watches to be good first "proper" watches. Some owners find the stock rubber straps uncomfortable or the overall size substantial on smaller wrists. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its combination of strong dive watch functionality and appealing design at its price point.

Sinn U50 SDR with TEGIMENT option

The Sinn U50 SDR with TEGIMENT option is widely praised for its robust submarine steel construction, impressive 50bar water resistance, and excellent anti-reflective coating. Owners and reviewers highlight its toolish, legible dial, satisfyingly tactile bezel, and the outstanding scratch resistance provided by the TEGIMENT hardening. Some owners note the lume is underwhelming, and a few find the clasp aesthetically large and chunky despite its functional diver's extension. Overall, owners and reviewers rate the Sinn U50 SDR with TEGIMENT option highly for its exceptional build quality and scratch resistance at its price point.

At a glance

16 of 29 specs differ
Diameter
Prospex Sea41mm
U50 SDR with TEGIMENT option41mm
Power Reserve
Prospex Sea70h
U50 SDR with TEGIMENT option38h
Water Resistance
Prospex Sea200m
U50 SDR with TEGIMENT option500m
MSRP
Prospex Sea$900
U50 SDR with TEGIMENT option$3,326

Full specifications

Case

5 specs
Thickness
12.3mm
11.2mm
Lug-to-Lug
46.9mm
Finish
bead-blasted
Water Resistance
200m
500m
Caseback

Crystal & Dial

5 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Underside
Dial Color
Black
Indices
Lume
LumiBrite on hands, index(es) and bezel
Luminescent

Movement

5 specs
Caliber
Seiko 6R35
Sellita SW300-1
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
38h
Jewels
24
25
Complications
None
Date

Pricing

1 specs
MSRP
$900
$3,326
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