Seiko Cal. 5668 - 278

The Seiko 5668-278 represents an important milestone in Seiko's 1977 lineup. Powered by the 5668 caliber with 36j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-cc482359b170]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1977

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