Seiko Cal. 5633 - 145

Released in 1978, the Cal. 5633 with design code 145 was part of Seiko's domestic market collection. It features a Navy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-d8d5703ccb49]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1978

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