Side by side

Praesidus A-5 UDTvsZelos Hammerhead V3 300m Titanium

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

A-5 UDT
PraesidusA-5 UDT
MSRP $645
Hammerhead V3 300m Titanium
ZelosHammerhead V3 300m Titanium
MSRP $559

At a glance

9 of 29 specs differ
Diameter
A-5 UDT38mm
Hammerhead V3 300m Titanium44mm
Power Reserve
A-5 UDT40h
Hammerhead V3 300m Titanium40h
Water Resistance
A-5 UDT200m
Hammerhead V3 300m Titanium300m
MSRP
A-5 UDT$645
Hammerhead V3 300m Titanium$559

Full specifications

Case

6 specs
Diameter
38mm
44mm
Thickness
13mm
Lug-to-Lug
44mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Titanium
Water Resistance
200m
300m

Crystal & Dial

1 specs
Dial Color
Blue
Ti - Mosaic MOP

Movement

1 specs
Caliber
Miyota 9015
Seiko NH35

Pricing

1 specs
MSRP
$645
$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.

Praesidus A-5 UDT

The Praesidus A-5 UDT is noted for its historically inspired design, featuring an oversized crown cap and chain that pays homage to WW2 canteen watches. Reviewers highlight its functional dial with embossed, Super-LumiNova filled numerals and markers for legibility, alongside 200m water resistance and a 38mm brushed stainless steel case. Some owners find the 11.7mm thickness problematic, describing it as disproportionately tall. The watch's ana/digi functionality and connection to special operations forces are also praised. On balance, owners and reviewers appreciate the Praesidus A-5 UDT for its unique historical design elements and functional dial.

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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