Seiko Cal. 5621 - 324

Released in 1975, the Cal. 5621 with design code 324 was part of Seiko's domestic market collection. With its 21mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-9ccb0fcdb3fe]

Also known as: Tuna, Sea Horse

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1975

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