Seiko Prospex Limited Edition 'Save The Ocean' Automatic Men's 40mm Watch SPB545J

The Seiko Prospex "Save the Ocean" SPB545J is a 1965 Heritage Diver's Watch Limited Edition, one of only 4,000 pieces, supporting Seiko's ongoing initiative to protect the world's oceans for future generations. Inspired by the crystal-clear waters and white sandy seabeds surrounding Okinawa, the sunray-patterned "tranquil teal" blue dial reflects light beautifully, evoking sunlight shimmering across the ocean's surface, and is paired with a subdued grey bezel for a sophisticated, sporty look.

Powering the watch is Seiko's in-house Calibre 6R55, offering hand-winding and a 72-hour power reserve, with an accuracy of -15/+25 seconds per day. The 40mm stainless steel case features a super-hard coating and is topped with curved sapphire crystal with anti-reflective coating on the inner surface, while LumiBrite treatment on the hands, indices and bezel ensures clarity in the darkest depths. It's water resistant to 300 metres, built for professional diving environments. The watch is fitted with a stainless steel bracelet and a newly designed clasp, adjustable in six steps of approximately 2.5mm for a total range of 15mm, allowing a comfortable fit whether diving or wearing it day to day. The case back is engraved "LIMITED EDITION" with an individual serial number.