Seiko Prospex Introduces Two Limited-Edition Watches Celebrating Seiko’s 145th Anniversary

Seiko Watch Corporation will release two limited-edition models from the Seiko Prospex collection on Wednesday, June 10, in celebration of Seiko’s 145th anniversary. The model equipped with Caliber 6R55 is priced at 192,500 yen including tax and limited to 4,000 pieces worldwide. The model equipped with Caliber 4R35 is priced at 83,600 yen including tax and limited to 9,999 pieces worldwide. Seiko founder Kintaro Hattori established Hattori Tokeiten, now Seiko Group Corporation, in 1881. Guided by his belief in always staying one step ahead of the times, Seiko completed Japan’s first domestically produced wristwatch in 1913 and went on to make major contributions to the development of Japan’s watch industry. In the 1960s, Seiko introduced a series of world-first and Japan-first products, including Japan’s first mechanical chronograph in 1964, Japan’s first diver’s watch in 1965, and the world’s first quartz wristwatch in 1969. These continued innovations and challenges, together with Seiko’s full-scale expansion into overseas markets, formed the foundation of the Seiko of today. The limited-edition models commemorating Seiko’s 145th anniversary, including these new releases, use blue as an accent color inspired by “Seiko Blue,” a color identity established in the 1960s and refined over time. Seiko Prospex is a comprehensive sports watch brand offering reliability and authentic functionality for activities that require precise time management, such as diving, sports competitions, and mountaineering. The history of Seiko sports watches began with Japan’s first domestically produced diver’s watch in 1965, later developing into world-leading chronograph innovation and continuing to evolve to this day. In recent years, Seiko has also supported marine conservation activities around the world to help protect the richness of the oceans. The limited-edition model equipped with Caliber 6R55 is based on the Diver’s 1965 Heritage model. It carries forward the origin of Seiko’s diver’s watches in a modern form, combining a classic design shaped by usability with 300-meter air-diving water resistance and a long power reserve of approximately 72 hours. The watch features a fresh white-silver dial and a deep blue bezel inspired by Seiko Blue. Its clasp allows fine adjustment of up to approximately 15mm with simple operation. While wearing the watch and keeping the clasp closed, the wearer can press the side buttons from both sides to extend or shorten the bracelet length. Adjustment is possible in six steps of approximately 2.5mm each, helping maintain comfort during changes in pressure while diving or changes in wrist size during daily wear. The limited-edition model equipped with Caliber 4R35 is characterized by a sharp design, including a bold case shape. The lugs emphasize flat surfaces that look as if they have been cut away by a blade, creating a crisp appearance. The bracelet links also include cut surfaces, while the hands and indexes are unified in a sharp design, giving the watch a strong presence. For this model, the bezel combines deep blue connected to Seiko Blue with silver, creating a special specification unique to the limited edition. Product specifications: Seiko 145th Anniversary Seiko Prospex Diver’s 1965 Heritage Limited Edition, reference HBC005J, suggested retail price 192,500 yen including tax, stainless steel case and bracelet with DiaShield, curved sapphire crystal with anti-reflective coating on the inner surface, 300-meter air-diving water resistance, case diameter 40.0mm excluding crown, thickness 13.0mm, limited to 4,000 pieces worldwide including 1,500 in Japan, scheduled release on Wednesday, June 10. Seiko 145th Anniversary Seiko Prospex Mechanical Limited Edition, reference HBB001J, suggested retail price 83,600 yen including tax, stainless steel case and bracelet, Hardlex crystal, 200-meter air-diving water resistance, case diameter 41.7mm excluding crown, thickness 12.3mm, limited to 9,999 pieces worldwide including 1,500 in Japan, scheduled release on Wednesday, June 10. DiaShield is Seiko’s proprietary surface-processing technology developed to protect the watch’s original shine and beautiful finish from scratches and small marks caused by daily use. The information in this release is current as of the announcement date and may change without notice.