Seiko Cal. 5278 - 164

The Seiko 5278-164 represents an important milestone in Seiko's 1978 lineup. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-4a8062d35f83]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Champagne

Jewels

22j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1978

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