Side by side

Citizen Eco-DrivevsLorier Neptune SIV

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

Eco-Drive
CitizenEco-Drive
MSRP $338
Neptune SIV
LorierNeptune SIV
MSRP $599

At a glance

10 of 29 specs differ
Diameter
Eco-Drive42.3mm
Neptune SIV39mm
Power Reserve
Eco-Drive40h
Neptune SIV40h
Water Resistance
Eco-Drive100m
Neptune SIV200m
MSRP
Eco-Drive$338
Neptune SIV$599

Full specifications

Case

5 specs
Category
Casual
Diver
Diameter
42.3mm
39mm
Thickness
12mm
Lug-to-Lug
46mm
Water Resistance
100m
200m

Crystal & Dial

2 specs
Crystal
Mineral
Sapphire
Dial Color
Green
Standard

Movement

2 specs
Caliber
J800
Type
Solar
Automatic

Pricing

1 specs
MSRP
$338
$599

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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 Eco-Drive

Citizen Eco-Drive watches are widely praised for exceptional durability and reliability, with many owners reporting theirs lasting over a decade without issue and some even suggesting they are "Buy It For Life" (BIFL) models. Owners appreciate the ease of use and reliability of the solar-powered quartz movement, with one noting their watch was only off by 2 minutes after five years of disuse. Specific models are noted for their engineering marvels, such as the world's thinnest light-powered watch at 2.98mm thick, a 100-day power reserve, and materials like cermet bezels and titanium construction with sapphire crystals. However, a few users have experienced malfunctions, including one chronograph that stopped keeping time shortly after purchase, requiring a lengthy warranty repair. The battery can degrade and may need replacement after 20+ years, and owners suggest keeping the watch charged in light to prolong its life.

Lorier Neptune SIV

Owners widely praise the Lorier Neptune SIV for its versatile, vintage-inspired design featuring a glossy gilt-style dial and a comfortable, tapered bracelet, noting its affordability reduces wear anxiety. Reviewers and owners alike mention the acrylic crystal as a point of contention, with some preferring sapphire, and one owner finds the bracelet lacks the feel of more expensive options. On balance, owners and reviewers rate the Lorier Neptune SIV highly for its appealing vintage aesthetic and value proposition.

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