Seiko Cal. 5637 - 392

Released in 1985, the Cal. 5637 with design code 392 was part of Seiko's domestic market collection. Powered by the 5637 caliber with 27j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-39dc7f0a9b92]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1985

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