Seiko King seiko 4402-8000 KingSeiko emblem

King Seiko 4402-8000 – 6400XXX (October 1966)

A sharp and honest example of early King Seiko—where precision, restraint, and purpose come together. This is the kind of watch that doesn’t need to shout; everything about it is deliberate and well executed.

The silver dial is clean and balanced, with crisp applied indices and classic dauphine hands. The subtle lightning bolt above 6 signals its high-grade lineage, while the overall layout stays true to the understated elegance King Seiko is known for.

The case carries that unmistakable mid-60s Seiko DNA: strong lines, wide lugs, and a solid presence on the wrist without feeling oversized. It wears beautifully and has that slightly more architectural feel that set King Seiko apart from standard Seiko models of the time.

Fitted on a quality Italian leather strap, it gives the watch a warm, refined look while staying true to its vintage character. Finished with the correct King Seiko caseback emblem.

Technical background

The 44KS series represents a key moment in Seiko’s development, sitting at the intersection of technical ambition and evolving design language. These watches were produced during a time when Seiko was actively competing internally to achieve higher standards of accuracy and finishing.

The cal. 4402 is a hand-wound movement with 25 jewels, running at 18,000 bph. It is known for its reliability, strong torque, and straightforward construction, making it both durable and easy to service.

This generation laid the groundwork for the sharper case designs and disciplined aesthetics that would later define Seiko’s high-end philosophy.

Tech sheet

• Reference: 4402-8000
• Serial: 6400XXX (October 1966)
• Size: ±36–37mm
• Movement: Seiko cal. 4402 manual wind
• Dial: Silver with applied indices
• Crystal: Acrylic
• Lug width: 18mm
• Condition: Good vintage condition with light wear
• Warranty: 2-year warranty
• Strap: Italian leather strap
• Caseback: King Seiko emblem present