Seiko Cal. 5635 - 321

The Seiko 5635-321 represents an important milestone in Seiko's 1968 lineup. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-7f5b8bb9953f]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1968

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