Seiko Cal. 5637 - 185

The Seiko 5637-185 represents an important milestone in Seiko's 1979 lineup. Powered by the 5637 caliber with 30j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-511e006d5137]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

30j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1979

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