Seiko Cal. 5633 - 742

The 5633-742 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5633 caliber with 19j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-06fe82413472]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1984

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