Which is cheaper, the Zelos Hammerhead (Tantalum LE) or the Seiko 5 Sports Field series?

At MSRP the Seiko 5 Sports Field series is the cheaper of the two at $450, against $1,499 for the Zelos Hammerhead (Tantalum LE) — a $1,049 gap before any retailer discounting.

Which is bigger, the Zelos Hammerhead (Tantalum LE) or the Seiko 5 Sports Field series?

The Zelos Hammerhead (Tantalum LE) wears larger at 44mm versus 39.4mm for the Seiko 5 Sports Field series — a 4.6mm difference across the dial.

Which has better water resistance, the Zelos Hammerhead (Tantalum LE) or the Seiko 5 Sports Field series?

The Zelos Hammerhead (Tantalum LE) is rated to 300m versus 10m for the Seiko 5 Sports Field series.

Which has a longer power reserve, the Zelos Hammerhead (Tantalum LE) or the Seiko 5 Sports Field series?

The Seiko 5 Sports Field series carries a 41-hour power reserve against 40 hours on the Zelos Hammerhead (Tantalum LE).

What movement does the Zelos Hammerhead (Tantalum LE) run compared to the Seiko 5 Sports Field series?

Both watches run automatic movements — the Zelos Hammerhead (Tantalum LE) uses the Seiko NH35 and the Seiko 5 Sports Field series uses the 4R34.

Side by side

Zelos Hammerhead (Tantalum LE)vsSeiko 5 Sports Field series

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

Zelos Hammerhead (Tantalum LE)

hammerhead-v3-300m-tantalum-limited-edition

MSRP $1,499

Seiko 5 Sports Field series

ssk023

MSRP $450

At a glance

15 of 29 specs differ

Diameter

Hammerhead (Tantalum LE)44mm

5 Sports Field series39.4mm

Power Reserve

Hammerhead (Tantalum LE)40h

5 Sports Field series41h

Water Resistance

Hammerhead (Tantalum LE)300m

5 Sports Field series100m

MSRP

Hammerhead (Tantalum LE)$1,499

5 Sports Field series$450

Full specifications

Case

7 specs

Crystal & Dial

4 specs

Crystal

Domed Sapphire

Hardlex

Crystal Shape

Flat

Curved

Dial Color

Tantalum LE

Black

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Seiko NH35

4R34

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$1,499

$450

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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.

WatchUSeek

Fratello

Seiko 5 Sports Field series

The Seiko 5 Sports Field series offers an accessible explorer-style watch with a 41mm stainless steel case, 100m water resistance, and a Hardlex crystal. The Field GMT model features a caller GMT complication powered by the 4R34 movement, while the standard Field models use the 4R36 with a 41-hour power reserve. Both models include Arabic numerals coated in LumiBrite and a lumed pearl on the bezel. On balance, the Seiko 5 Sports Field GMT is a well-regarded entry-level explorer watch for its price point, despite its office-style GMT function.

From video reviewers

The prominent five-sided GMT hand enhances legibility and adds a sophisticated aesthetic to the watch. The Seiko 5 Sports Field series offers similar functionality to the Explorer 2 at a lower price, making it a valuable option. Reviewers disagree on whether it's a missed opportunity for Seiko to release this model first, with one reviewer implying it would have been a more logical addition to their lineup.

Monochrome·2

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