Seiko Cal. 5642 - 678

The Seiko 5642-678 represents an important milestone in Seiko's 1975 lineup. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-cfe74229f428]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1975

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