Side by side

Sinn T50 GBDRvsZelos Hammerhead V3 300m Titanium

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

T50 GBDR
SinnT50 GBDR
MSRP $4,428
Hammerhead V3 300m Titanium
ZelosHammerhead V3 300m Titanium
MSRP $559

At a glance

17 of 29 specs differ
Diameter
T50 GBDR41mm
Hammerhead V3 300m Titanium44mm
Power Reserve
T50 GBDR38h
Hammerhead V3 300m Titanium40h
Water Resistance
T50 GBDR500m
Hammerhead V3 300m Titanium300m
MSRP
T50 GBDR$4,428
Hammerhead V3 300m Titanium$559

Full specifications

Case

7 specs
Diameter
41mm
44mm
Thickness
12.3mm
13mm
Lug-to-Lug
44mm
Lug Width
20mm
22mm
Finish
bead-blasted
Brushed and polished
Water Resistance
500m
300m
Caseback
Solid

Crystal & Dial

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

Movement

3 specs
Caliber
SW 300-1
Seiko NH35
Power Reserve
38h
40h
Complications
Date
None

Pricing

1 specs
MSRP
$4,428
$559

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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 T50 GBDR

The Sinn T50 GBDR features a titanium case with a GoldBronze bezel and matte black dial, presenting a two-tone toolish aesthetic that reviewers find appealing. The GoldBronze alloy offers improved skin compatibility and corrosion resistance, developing patina slower than standard bronze. Reviewers note a stamped clasp that can come loose and suggest the price point may be high for some Sinn enthusiasts.

Zelos Hammerhead V3 300m Titanium

The Zelos Hammerhead V3 300m Titanium is widely praised for its exceptional lume, unique and beautiful dial finishing that reflects light dramatically, and solid build quality that exceeds its price point. Owners also highlight its comfortable wearability, especially the lightweight titanium variant, and the convenient on-the-fly micro-adjustment on the bracelet. One owner notes the Japanese movement performs better than anticipated, and the Ti-Damascus variant features a unique, patterned dial and bezel. However, some owners find the 44mm size large, the crown "off," and the bracelet clasp could be more scratch-resistant, with resizing pins described as stubborn. Reattaching the bracelet after removal is also noted as extremely difficult. Overall, owners rate the Zelos Hammerhead V3 300m Titanium highly for its impressive dial aesthetics and value for money.

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