Seiko 5 Sports Field GMT HDB001 Automatic Watch

Field-Watch Utility with GMT Functionality The Seiko 5 Sports Field GMT HDB001 brings dual-time functionality to Seiko's rugged Field Series in a versatile 39.4mm stainless steel case. Designed for everything from travel and outdoor adventures to everyday wear, it combines classic field-watch legibility with a dedicated 24-hour GMT hand for tracking a second time zone. Inside, Seiko's Caliber 4R34 automatic movement provides approximately 41 hours of power reserve, while a curved Hardlex crystal, stainless steel bracelet, and 100-meter water resistance give the HDB001 the durability expected from Seiko 5 Sports. Key Features Compact 39.4mm stainless steel case Dedicated 24-hour GMT hand Dual-time display Seiko Caliber 4R34 automatic movement Approximately 41-hour power reserve Practical date display LumiBrite hands and hour markers Curved Hardlex crystal Stainless steel bracelet See-through caseback 100-meter water resistance The Skeie's Perspective At Skeie's Jewelers, we think the HDB001 brings together two things Seiko does particularly well: approachable mechanical watchmaking and genuinely useful functionality. The 39.4mm case is a major part of the appeal. It's noticeably more compact than many mechanical GMT watches, giving the HDB001 easy everyday proportions while still offering the visual interest and usefulness of a second time zone. We also like that Seiko keeps the overall design straightforward. This is a GMT you can actually wear every day—whether you're traveling, keeping track of another time zone, or simply looking for a mechanical field watch with a little more functionality. GMT for Everyday Travel The HDB001 uses a dedicated 24-hour hand to display a second time zone, allowing you to keep track of home time while traveling or follow another part of the world throughout the day. Unlike the rotating-bezel GMT design found on some Seiko 5 Sports models, this Field Series interpretation keeps the overall appearance clean and compact, placing the emphasis on legibility and everyday versatility. Automatic Seiko Reliability Powering the HDB001 is Seiko's Caliber 4R34, an automatic mechanical movement with manual winding capability. The 24-jewel movement provides approximately 41 hours of power reserve and includes a 24-hour dual-time hand, date display, and stop-seconds function for precise time setting. A see-through screw caseback provides a view of the mechanical movement inside.