Seiko Cal. 4487 - 245

This Solar model from 1969 features a 36mm PVD Black case. Powered by the 4487 caliber with 27j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-2fb2db37124d]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1969

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