Seiko Cal. 5633 - 926

Released in 1971, the Cal. 5633 with design code 926 was part of Seiko's domestic market collection. With its 19mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-e6b6ecd53ef5]

Also known as: Monster, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1971

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