Maen Manhattan Ultra ThinvsLongines LONGINES MASTER COLLECTION

The Maen Manhattan Ultra Thin is widely praised for its slim case, with reviewers noting a 6.9mm or 7.1mm thickness, and its elegant, vintage-inspired styling. Specific design elements highlighted include a Côtes de Genève or hammered "Tuscan" dial finish and an integrated bracelet. The hand-wound ETA Pesaux 7001 movement is noted for its role in achieving the thin profile, offering a 42-hour power reserve. However, the black text on the vertically striped dial can be difficult to read, and the integrated bracelet lacks a quick-release system. Some reviewers expressed a desire for a 38mm case size option. Overall, reviewers rate the Maen Manhattan Ultra Thin highly for its slim, elegant design and vintage aesthetic at its price point.

Owners widely praise the Longines Master Collection for its attractive designs, heritage feel, and value, with specific models highlighted for their legibility and manageable sizes. One owner finds the 40mm moonphase chronograph complete calendar mesmerizing and versatile at around $1700, while another appreciates the 38mm World Timer's looks and blue hands. A drawback noted across different models is limited water resistance, with one owner selling their watch due to this, and the World Timer disc requiring manual adjustment for daylight saving time in some areas. On balance, owners rate the Longines Master Collection highly for its aesthetic appeal and value proposition, despite some limitations in water resistance and functionality.