Side by side

Citizen Series 8 870vsSeiko 5 Sports Field series

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

Series 8 870
CitizenSeries 8 870
MSRP $1,095
5 Sports Field series
Seiko5 Sports Field series
MSRP $315

At a glance

13 of 29 specs differ
Diameter
Series 8 87039mm
5 Sports Field series39.4mm
Power Reserve
Series 8 87042h
5 Sports Field series41h
Water Resistance
Series 8 870100m
5 Sports Field series100m
MSRP
Series 8 870$1,095
5 Sports Field series$315

Full specifications

Case

4 specs
Diameter
39mm
39.4mm
Thickness
12mm
13.2mm
Lug-to-Lug
46mm
48.1mm
Lug Width
11mm
20mm

Crystal & Dial

5 specs
Crystal
Sapphire
Hardlex
Crystal Shape
Flat
Curved
AR Coating
Underside
Inner
Dial Color
Green
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
9051
4R36
Power Reserve
42h
41h
Jewels
25
24

Pricing

1 specs
MSRP
$1,095
$315

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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.

Citizen Series 8 870

The Citizen Series 8 870 is praised for its compelling value proposition and modern Japanese design with a sporty edge. Reviewers note its 40mm steel case, glossy dial with applied markers, and the in-house Calibre 0950 automatic movement offering 50 hours of power reserve and enhanced magnetic resistance. The flat sapphire crystal is noted to collect fingerprints, and the solid caseback omits a view of the movement. The limited edition variant features a 40.8mm black DLC-coated case, a carbon fiber dial, and the 0950 movement regulated to -5/+10 seconds per day. Overall, the Citizen Series 8 870 is viewed as a strong offering for its blend of design and features.

Seiko 5 Sports Field series

The Seiko 5 Sports Field series is praised for its value, offering an accessible explorer-style watch with a GMT complication and excellent legibility thanks to LumiBrite on the dial and bezel. The watches feature a 41mm stainless steel case, 100m water resistance, and are powered by either the 4R36 or 4R34 movement, both with a 41-hour power reserve. One reviewer notes the inclusion of a compass bezel with a lumed pearl and fully lumed Arabic numerals on the dial for the non-GMT models. Overall, reviewers consider the Seiko 5 Sports Field GMT models good value under 500 euros.

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