Seiko Cal. 5637 - 251

Released in 1976, the Cal. 5637 with design code 251 was part of Seiko's domestic market collection. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-c860fb129ae3]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1976

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