Seiko Cal. 6398 - 220

The 6398-220 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-0799ca78ca85]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1978

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