Citizen Eco-Drive OnevsanOrdain Model 1 (Group Buy)

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.

Owners widely praise the anOrdain Model 1 (Group Buy) for its exceptional vitreous enamel dial, custom typography, and elegant, handmade aesthetic. The dial's deep colors and light-reflecting properties are frequently highlighted as a standout feature, with crisp printing and legible layouts. One owner notes the case finishing is basic but well-executed with a high-polish finish and defined lugs. The watch is considered worth the wait and looks better in person, becoming a daily wearer for some. However, long wait times from deposit to delivery, sometimes nearly two years, are a significant drawback. The Sellita SW200-1 movement is standard with a 38-hour power reserve, and one reviewer wished the 12.3mm case was slimmer. Another owner found the case plain and the buckle thin, while also noting white hands could crowd dial numbers on a GMT variant. Accuracy figures vary, with one owner reporting good timekeeping and another noting the watch is keeping good time.