The Seiko Prospex SPB121J1 Alpinist is a rugged yet refined automatic watch designed for adventure. Featuring the in-house 6R35 calibre with a robust 70-hour power reserve, this timepiece delivers reliable performance with +25 to -15 seconds per day accuracy. Its green dial, protected by a sapphire crystal with inner anti-reflective coating, includes a magnified date display and Lumibrite hands and markers for enhanced legibility. The 39.5mm stainless steel case houses a rotating compass inner ring, screw-down crown, and see-through case back. With 200m water resistance and a leather strap, it’s ideal for the outdoors or daily wear.