Seiko Cal. 5637 - 537

The Seiko 5637-537 represents an important milestone in Seiko's 1973 lineup. Powered by the 5637 caliber with 20j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-6533be0135a4]

Also known as: Panda, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1973

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