A modern tribute to Seiko’s pioneering spirit, the Seiko Prospex Alpinist SPB503J1 continues a legacy that began in 1959 with timepieces built for Japan’s mountain explorers, the Yama-otoko. This refined model features a deep teal blue dial beneath scratch-resistant sapphire crystal glass, enriched by vintage-inspired cathedral hands, Arabic numerals and wedge-shaped indices that echo its adventurous heritage. The stainless steel case, finished with Seiko’s super-hard coating, offers both enduring resilience and a subtle, lustrous sheen. A sapphire exhibition case back reveals the meticulously crafted 6R55 automatic movement, offering a 72-hour power reserve and precision of -15/+25 seconds per day. Water resistant and built to withstand rugged environments, the SPB503J1 is a versatile companion for explorers and collectors alike. Its blend of functional durability and timeless style captures the essence of the Prospex spirit, where professional performance meets classic Seiko craftsmanship. • Powered by the 6R55 automatic movement with 24 jewels and a power reserve of up to 72 hours. • Presented on a silver stainless steel bracelet with push button deployment clasp. • Scratch resistant sapphire crystal glass with anti-reflective coating on inner surface and date magnifier. • 46.4mm case width. • 200 metre water resistance.