Side by side

Citizen Eco-Drive OnevsGeckota Pioneer Automatic

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

The bottom line

The 36.6mm Eco-Drive One wears 5.4mm narrower than the 42mm Pioneer Automatic — that's a meaningful jump on most wrists.

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 One

The Citizen Eco-Drive One is widely celebrated for its groundbreaking thinness, with multiple sources confirming its status as the world's thinnest light-powered watch, measuring between 2.98mm and 3.5mm. Owners and reviewers alike praise its exceptional lightness, titanium construction, and good build quality that avoids feeling flimsy, noting its "wow factor" and superb finishing. The watch features a proprietary, ultra-thin Eco-Drive quartz movement and a synthetic sapphire dial, with some models offering up to 12 months of power reserve. However, its high price, ranging from $3,500 to $5,000, is a significant drawback for some, and its aesthetic is considered too plain or dated by a minority who prefer other Citizen models. The Citizen Eco-Drive One is also noted for lacking a seconds hand and having only splash-resistant water protection.

Geckota Pioneer Automatic

Owners widely praise the Geckota Pioneer Automatic for its retro-futuristic design, impressive lume, and unique dial finishing. The red dial variants are particularly favored for their brushed fumee appearance and vintage feel. Accuracy is noted as surprisingly good for an NH35 movement, though one owner reports +/- 20 seconds per day. The watch is considered a bargain by some at $259, while others find the $519 price for the NH35 movement in a 14mm thick case excessive. The 42mm cushion case is noted to wear large due to its lack of a prominent bezel. A minor phantom date position on the crown is reported, and the crystal is very reflective despite an anti-reflective coating. Some find the gold accents look a bit cheap, and one instance of a loose fleck of lume was observed. Overall, owners rate the Geckota Pioneer Automatic highly for its distinctive vintage aesthetic and value, particularly on sale.

Where to get them

Check prices & track

Citizen Eco-Drive One
Citizen Eco-Drive One
MSRP $2,995
Geckota Pioneer Automatic
Geckota Pioneer Automatic
MSRP $299
Eco-Drive One
CitizenEco-Drive One
MSRP $2,995
Pioneer Automatic
GeckotaPioneer Automatic
MSRP $299

At a glance

13 of 29 specs differ
Diameter
Eco-Drive One36.6mm
Pioneer Automatic42mm
Power Reserve
Eco-Drive One40h
Pioneer Automatic40h
Water Resistance
Eco-Drive One300m
Pioneer Automatic100m
MSRP
Eco-Drive One$2,995
Pioneer Automatic$299

Full specifications

Case

7 specs
Category
Dress
Field
Diameter
36.6mm
42mm
Thickness
12mm
14mm
Lug-to-Lug
46mm
45mm
Lug Width
20mm
22mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

3 specs
Crystal
Sapphire
Domed Sapphire
AR Coating
Underside
Inner
Dial Color
White
Black

Movement

2 specs
Caliber
8845
NH35
Type
Solar
Automatic

Pricing

1 specs
MSRP
$2,995
$299

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