Side by side

Seiko 5 Sports Field seriesvsZelos Helica Moonphase

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

5 Sports Field series
Seiko5 Sports Field series
MSRP $450
Helica Moonphase
ZelosHelica Moonphase
MSRP $1,049

At a glance

13 of 29 specs differ
Diameter
5 Sports Field series39.4mm
Helica Moonphase39mm
Power Reserve
5 Sports Field series41h
Helica Moonphase40h
Water Resistance
5 Sports Field series100m
Helica Moonphase100m
MSRP
5 Sports Field series$450
Helica Moonphase$1,049

Full specifications

Case

5 specs
Category
GMT
Moonphase
Diameter
39.4mm
39mm
Thickness
13.6mm
10mm
Lug-to-Lug
47.9mm
39mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

4 specs
Crystal
Hardlex
Sapphire
Crystal Shape
Curved
Flat
Dial Color
Black
Meteorite
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
4R34
Sellita SW288 Moonphase
Power Reserve
41h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$450
$1,049

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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 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.

Zelos Helica Moonphase

Owners widely praise the Zelos Helica Moonphase for its gorgeous aventurine dial, unique industrial-dress aesthetic, and comfortable wearability, with one owner calling it spectacular and another their favorite Zelos. The moonphase complication is frequently highlighted as beautiful, though some find the double moon distracting or the dial cluttered. A manual-wind movement combined with a screw-down crown is noted as a drawback by some, requiring adjustment and potentially feeling fragile when fully wound, while one owner reports a 43-hour power reserve. On balance, owners rate the Zelos Helica Moonphase highly for its stunning aventurine dial and unique design at its price point.

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