Seiko Cal. 5687 - 690

This Solar model from 1969 features a 40mm Hardlex-Coated Steel case. Powered by the 5687 caliber with 27j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-f6093e052b3d]

Also known as: Goldfeather, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Silver

Jewels

27j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1969

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