Seiko Cal. 5637 - 982

The Seiko 5637-982 represents an important milestone in Seiko's 1974 lineup. Powered by the 5637 caliber with 19j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-116bbb4540b2]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1974

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