Side by side

Sinn U50 HYDRO SDR with TEGIMENT optionvsZelos Hammerhead V3 300m Bronze

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

U50 HYDRO SDR with TEGIMENT option
SinnU50 HYDRO SDR with TEGIMENT option
MSRP $3,110
Hammerhead V3 300m Bronze
ZelosHammerhead V3 300m Bronze
MSRP $449

At a glance

19 of 29 specs differ
Diameter
U50 HYDRO SDR with TEGIMENT option41mm
Hammerhead V3 300m Bronze44mm
Power Reserve
U50 HYDRO SDR with TEGIMENT option40h
Hammerhead V3 300m Bronze40h
Water Resistance
U50 HYDRO SDR with TEGIMENT option5,000m
Hammerhead V3 300m Bronze300m
MSRP
U50 HYDRO SDR with TEGIMENT option$3,110
Hammerhead V3 300m Bronze$449

Full specifications

Case

8 specs
Diameter
41mm
44mm
Thickness
11.8mm
13mm
Lug-to-Lug
44mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Finish
bead-blasted
Brushed and polished
Water Resistance
5000m
300m
Caseback
Solid

Crystal & Dial

6 specs
Crystal
Sapphire
Domed Sapphire
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Black
Bronze - Frost
Indices
Applied
Lume
Luminescent
None

Movement

4 specs
Caliber
Ronda 715 Li - SWISS MADE
Seiko NH35
Type
Quartz
Automatic
Jewels
5
25
Complications
Date
None

Pricing

1 specs
MSRP
$3,110
$449

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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.

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.

Zelos Hammerhead V3 300m Bronze

Owners widely praise the Zelos Hammerhead V3 300m Bronze for its distinctive 70s-inspired design, slim 13.5mm case, and improved lume, offering a sophisticated timepiece at an accessible price point starting at $349. The unique dial is noted for evoking an otherworldly feeling, and the comfortable bracelet features on-the-fly micro-adjustment. Some enthusiasts express frustration with shipping delays and a desire to see the watch on a wrist before purchase. One owner flags that the clasp material could be more scratch-resistant, and resizing bracelet pins can be stubborn. On balance, owners rate the Zelos Hammerhead V3 300m Bronze highly for its unique design and build quality at its price point.

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