Seiko Cal. 5642 - 676

The Seiko 5642-676 represents an important milestone in Seiko's 1971 lineup. Powered by the 5642 caliber with 36j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-db39b2663b8b]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1971

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