Seiko Cal. 5287 - 306

This Spring Drive model from 1978 features a 35mm Gold-Plated case. Powered by the 5287 caliber with 28j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-689a95a5a7a9]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1978

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