Citizen Eco-Drive OnevsPhoibos Apollo Titanium

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 Phoibos Apollo Titanium Dark Matter Blue is described as beautiful and unique, with one owner noting it as their first Chinese watch. One owner reports small marks on the case, bracelet, bezel, and case back, but otherwise finds the watch in very good condition. On balance, owners find the Phoibos Apollo Titanium to be a visually appealing and unique timepiece.