Citizen Eco-Drive OnevsCWC British Military G10 Quartz Watch

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 appreciate the CWC British Military G10 Quartz Watch for its 36mm size and utilitarian, robust build suitable for field use. The bead-blasted stainless steel case and domed acrylic crystal are noted features, though the crystal scratches easily and requires buffing. The unusual 18.5mm lug width with fixed springbars limits strap options to one-piece designs, and water resistance is rated at 50m. Some owners feel modern versions lack the "soul" of vintage issued models, while others highlight improved waterproofing and lume. Overall, owners value the CWC British Military G10 Quartz Watch for its practical, no-nonsense tool-watch design and durable construction.