Seiko Cal. 5264 - 378

The Seiko 5264-378 represents an important milestone in Seiko's 1986 lineup. Powered by the 5264 caliber with 26j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-590ccdb85d9b]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1986

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