Citizen Eco-Drive OnevsLongines LA GRANDE CLASSIQUE DE LONGINES

The Citizen Eco-Drive One is widely celebrated for its groundbreaking thinness, with multiple sources confirming a case thickness of 2.98mm, making it the world's thinnest light-powered watch. Owners and reviewers alike praise its "wow factor," describing it as "svelte" and "beautiful" with a titanium case and bracelet that feels exceptionally light on the wrist. The Eco-Drive quartz movement offers a power reserve of up to 100 days, and its miniaturization is considered impressive. However, the price is noted as a significant barrier for some, and one owner finds its aesthetic too plain or dated. Servicing is restricted to authorized centers due to proprietary construction. Overall, owners and reviewers rate the Citizen Eco-Drive One highly for its extreme thinness and lightweight titanium construction.

Owners widely praise the La Grande Classique de Longines for its extreme thinness, elegance, and timeless simplicity, with many finding it comfortable and lightweight due to its slim, flat design. The quartz version is recommended for its accuracy and convenience, while both quartz and automatic models are noted for their slim profiles and elegant aesthetics, with the bracelet being comfortable. Some owners are split on the styling, with Roman numerals appealing to some but not all, and one owner finds the Tonneau collection model a lovely dress watch despite preferring round faces. Owners suggest pre-owned options for better value, with prices ranging from $300-$1000 USD depending on the model and condition. One owner reports frequent battery replacements on the quartz model, with batteries lasting only months. Overall, owners rate the La Grande Classique de Longines highly for its slim, elegant design and value, particularly on the pre-owned market.