Seiko Cal. 5633 - 686

The Seiko 5633-686 represents an important milestone in Seiko's 1970 lineup. Powered by the 5633 caliber with 28j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-5b32f68776fa]

Also known as: Sea Horse, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1970

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