Seiko Prospex GMT 1968 Heritage Diver's Watch HBC001J1 2412 It is a third-party accessory

It is a third-party accessory designed specifically to fit Seiko Alpinist models with a 20mm lug width

This premium material is not only incredibly comfortable but also durable

this model is a true collector's item

5 mm excluding crown

Seiko Prospex GMT 1968 Heritage Diver's Watch HBC001J1 2412 It is a third-party accessoryThe Seiko HBC001J1 is a high performance masterpiece that bridges the gap between a rugged saturation diver and a sophisticated travel watch. Featuring a stunning forest green dial and significant improvements over its predecessorsincluding enhanced water resistance and a state of the art adjustable claspthis 42mm timepiece is designed to stand out while delivering the absolute precision of the 6R54 GMT movement.