Seiko Prospex Monster 42.4mm SRPH75K

The Seiko Prospex Save the Ocean Monster SRPH75K is a standout diver that showcases Seiko’s deep commitment to craftsmanship, marine conservation, and purposeful design. Inspired by the icy beauty of Antarctica—the world’s largest marine sanctuary—this special‑edition timepiece features a unique dial whose colour and texture evoke the underwater view of penguins gliding near the surface.

A subtle penguin silhouette at the 10 o’clock marker serves as a reminder of the fragile ecosystems Seiko supports through its Save the Ocean initiative.

Powered by Seiko’s dependable 4R36 automatic movement with a 41‑hour power reserve, the SRPH75K blends rugged capability with refined detail. Its stainless‑steel case and bracelet, Hardlex crystal with magnifier, LumiBrite‑enhanced visibility, and 200 m water resistance make it a reliable companion in any environment. Affectionately known as the “Monster” among Seiko fans, the watch’s bold, tooth‑like bezel design has made it one of the most recognisable silhouettes in the Prospex range. Since introducing Japan’s first diver’s watch in 1965, Seiko has consistently set global standards for durability and innovation, and the SRPH75K continues that tradition with modern engineering and an adventurous spirit.

What we love about the Seiko Prospex Save the Ocean Monster SRPH75K: The Antarctic‑inspired dial is not only visually striking but also rich in storytelling—bringing a sense of exploration and purpose to your wrist. Paired with the iconic Monster case and Seiko’s proven dive‑watch reliability, this model stands out as a meaningful, robust, and beautifully executed piece that celebrates both Seiko heritage and ocean conservation.

Orders are dispatched within 1–3 business days from Sydney via Australia Post Express for fast and reliable delivery. Customers located in Sydney may also enjoy the convenience of same‑day Click & Collect, with orders ready for pickup from our Alexandria showroom just one hour after purchase when this option is selected at checkout.

Every watch is covered by a 3‑year Seiko Australia warranty, providing complete peace of mind. StarBuy is an Authorised Seiko Distributor, and all watches are supplied in genuine Seiko original packaging. Warranties are registered online directly with Seiko, and following dispatch, Seiko will email you confirmation of your warranty registration along with a link to the online instruction manual. In line with Seiko’s current sustainability practices, printed warranty booklets and manuals are no longer supplied.