Seiko Cal. 5648 - 200

The Seiko 5648-200 represents an important milestone in Seiko's 1978 lineup. Powered by the 5648 caliber with 21j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-b122f250dd1d]

Also known as: Tuna, Crown

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1978

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