Seiko Cal. 5637 - 891

The 5637-891 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5637 caliber with 32j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-f5252fdc04bd]

Also known as: Crown, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1967

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