Seiko Cal. 5221 - 306

The 5221-306 is a sought-after Spring Drive piece from Seiko's golden era. With its 18mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-8f34ed3df065]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Champagne

Jewels

27j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1977

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