Side by side

Zelos Hammerhead (Tantalum LE)vsSeiko Prospex SPEEDTIMER

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

Hammerhead (Tantalum LE)
ZelosHammerhead (Tantalum LE)
MSRP $1,499
Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $750

At a glance

14 of 29 specs differ
Diameter
Hammerhead (Tantalum LE)44mm
Prospex SPEEDTIMER41.4mm
Power Reserve
Hammerhead (Tantalum LE)40h
Prospex SPEEDTIMER40h
Water Resistance
Hammerhead (Tantalum LE)300m
Prospex SPEEDTIMER100m
MSRP
Hammerhead (Tantalum LE)$1,499
Prospex SPEEDTIMER$750

Full specifications

Case

6 specs
Category
Diver
Chronograph
Diameter
44mm
41.4mm
Lug-to-Lug
44mm
45.9mm
Lug Width
22mm
21mm
Material
Titanium
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

5 specs
Crystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Tantalum LE
Black
Lume
None
LumiBrite on hands and index(es)

Movement

2 specs
Caliber
Seiko NH35
V192
Type
Automatic
Quartz

Pricing

1 specs
MSRP
$1,499
$750

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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.

Zelos Hammerhead (Tantalum LE)

The Zelos Hammerhead (Tantalum LE) features a forged carbon dial and bezel insert with infused lume. On balance, owners and reviewers rate the Zelos Hammerhead (Tantalum LE) highly for its unique material composition and substantial feel.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER's design, with specific mentions of its beautiful ice blue sundial and compact 39mm case size, which some note wears smaller than its specifications due to a short lug-to-lug distance. Reviewers highlight its racing-inspired aesthetic and versatility, with one owner finding the 39mm solar model a sturdy and reliable everyday watch with 100m water resistance. However, some owners question the value proposition, citing the $700 price for a solar quartz model and a thickness of 13mm, while others expressed a preference for automatic movements. On balance, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER's attractive vintage-inspired design and compact wearability, though some debate its value and thickness for a solar quartz chronograph.

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