Seiko Prospex Marinemaster 1965 Heritage Diver's WatchvsSpinnaker Fleuss 40 Automatic

The Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch is praised for its modern execution of a classic design, with reviewers noting the appealing 39.5mm case size and updated bracelet that improve wearability. Some reviewers mention the 6L37 movement has a 46-hour power reserve, with accuracy rated around -10/+15 seconds per day. A drawback identified by reviewers is the lack of tool-free micro-adjustment on the clasp. Overall, owners and reviewers find the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch to be a handsome re-interpretation of a beloved design, with its improved wearability being a key strength.

The Spinnaker Fleuss 40 Automatic is noted as a good size for smaller wrists, with one owner finding it comfortable on a 6.25-inch wrist. However, the lume is considered too diffuse for easy nighttime reading of the hands. The pilot-style crown is an unusual design choice for a dive watch. Overall, owners and reviewers find the Spinnaker Fleuss 40 Automatic to be a well-sized and comfortable watch with a unique crown design.