Citizen Eco-Drive OnevsVaer DS4 Topo Designs x Worn & Wound Solar Hiker

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.

The Vaer DS4 Topo Designs x Worn & Wound Solar Hiker is praised for its 38mm size and the inclusion of three Topo-designed straps and an accessory case. It utilizes a solar-powered Epson quartz movement, noted as a solid workhorse. Overall, owners appreciate the practical inclusions and the compact sizing of the Vaer DS4 Topo Designs x Worn & Wound Solar Hiker.