Seiko Cal. 5637 - 308

Released in 1978, the Cal. 5637 with design code 308 was part of Seiko's domestic market collection. With its 21mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-221ad2dd0edc]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Burgundy

Jewels

29j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1978

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