Side by side

Spinnaker Challenger AutomaticvsSinn U50 HYDRO SDR with TEGIMENT option

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

Challenger Automatic
SpinnakerChallenger Automatic
MSRP $289
U50 HYDRO SDR with TEGIMENT option
SinnU50 HYDRO SDR with TEGIMENT option
MSRP $3,110

At a glance

18 of 29 specs differ
Diameter
Challenger Automatic42mm
U50 HYDRO SDR with TEGIMENT option41mm
Power Reserve
Challenger Automatic40h
U50 HYDRO SDR with TEGIMENT option40h
Water Resistance
Challenger Automatic200m
U50 HYDRO SDR with TEGIMENT option5,000m
MSRP
Challenger Automatic$289
U50 HYDRO SDR with TEGIMENT option$3,110

Full specifications

Case

8 specs
Diameter
42mm
41mm
Thickness
19mm
11.8mm
Lug-to-Lug
49.5mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
bead-blasted
Water Resistance
200m
5000m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Underside
Dial Color
Blue
Black
Indices
Applied
Lume
None
Luminescent

Movement

4 specs
Caliber
SII NH35A
Ronda 715 Li - SWISS MADE
Type
Automatic
Quartz
Jewels
25
5
Complications
None
Date

Pricing

1 specs
MSRP
$289
$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.

Spinnaker Challenger Automatic

The Spinnaker Challenger Automatic is widely praised for its fun, playful design, solid build quality, and satisfying bezel action. Owners appreciate the comfortable 42mm DLC-coated case and the thoughtful integration of the Popeye theme, with the character serving as the hour and minute hands. Reviewers note the reliable Seiko NH35 movement and 300m water resistance. Some owners find the blue lume weaker than expected, and the ultra-domed sapphire crystal presents challenges for photography. The thick rubber strap is also cited as difficult to manage. Overall, owners and reviewers rate the Spinnaker Challenger Automatic highly for its unique character integration and solid dive watch fundamentals at its price point.

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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