Seiko Cal. 3899 - 621

This Hand-Winding model from 1973 features a 41mm PVD Black case. With its 18mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-1743d530d47c]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1973

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