Seiko Cal. 5637 - 616

The Seiko 5637-616 represents an important milestone in Seiko's 1974 lineup. Powered by the 5637 caliber with 22j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-efb668868c0a]

Also known as: Golden Tuna, Flighty

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1974

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