Side by side

Seiko Prospex RotocallvsZelos Hammerhead V3 300m Bronze

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

Prospex Rotocall
SeikoProspex Rotocall
MSRP $550
Hammerhead V3 300m Bronze
ZelosHammerhead V3 300m Bronze
MSRP $449

At a glance

12 of 29 specs differ
Diameter
Prospex Rotocall37mm
Hammerhead V3 300m Bronze44mm
Power Reserve
Prospex Rotocall40h
Hammerhead V3 300m Bronze40h
Water Resistance
Prospex Rotocall100m
Hammerhead V3 300m Bronze300m
MSRP
Prospex Rotocall$550
Hammerhead V3 300m Bronze$449

Full specifications

Case

7 specs
Category
Sport
Diver
Diameter
37mm
44mm
Thickness
10.6mm
13mm
Lug-to-Lug
43.5mm
44mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
100m
300m

Crystal & Dial

2 specs
Crystal
Hardlex
Domed Sapphire
Dial Color
Black
Bronze - Frost

Movement

2 specs
Caliber
A824
Seiko NH35
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$550
$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.

Seiko Prospex Rotocall

Owners widely praise the Seiko Prospex Rotocall for its charismatic retro design and comfortable 37mm size, with many appreciating its space-faring heritage. However, multiple sources criticize its price point, suggesting it is too high for an all-digital quartz watch with features like a stamped clasp, mineral crystal, and standard quartz movement. Some owners also note drawbacks such as a flimsy battery mount and split pin bracelet construction. On balance, owners and reviewers find the Seiko Prospex Rotocall visually appealing and a faithful re-release, but its value proposition is frequently questioned due to its price.

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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