Citizen Eco-Drive OnevsVenezianico Nereide Tungsteno 39

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 Venezianico Nereide Tungsteno 39 for its attractive aesthetics, particularly the iridescent tungsten bezel and mother-of-pearl dial, and its thin profile. The Miyota 9039 movement is noted for keeping good time and contributing to the watch's slimness. Some owners report a stiff bezel that loosens with wear and desire brighter lume. Criticisms consistently focus on the bracelet, citing split pins, a lack of micro-adjustments and quick-release spring bars, and a need for smoothing. Overall, owners rate the Venezianico Nereide Tungsteno 39 highly for its unique design and value, despite noted bracelet shortcomings.