Longines PrimaLuna MoonphasevsMonta Noble

The Longines PrimaLuna Moonphase features a fluid case design and a 72-hour power reserve from its automatic movement. Owners note its accuracy averages 1.3 seconds lost per day across six positions, and 3 to 4 seconds on the wrist, performing within COSC standards. Previously, moon phase models utilized quartz movements, a detail that may not appeal to mechanical watch enthusiasts. Overall, owners rate the Longines PrimaLuna Moonphase highly for its updated automatic movement and reliable timekeeping.

The Monta Noble is widely praised for its slim 9.7mm case, excellent finishing comparable to higher-end brands, and highly adjustable bracelet. Owners note its versatility and accuracy, with one reporting +2 sec/day. The well-executed date at six is also a positive point. However, some find the dial proportions off with small indices and too much open space, and the polished bezel a scratch magnet. There are mixed opinions on the clasp, with some finding it fiddly and others praising its adjustability. The crown action is described by one owner as mediocre, and a visible gasket is noted. The Monta Noble is priced at $1,600-$1,795 and features a Sellita SW300-based M-22 movement. Overall, owners and reviewers rate the Monta Noble highly for its slim profile and exceptional finishing at its price point.