Seiko Cal. 6659 - 550

This Solar model from 1978 features a 36mm Titanium case. It features a Silver dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-bc61b4ca4f2a]

Also known as: Sumo, World Timer

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

8.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1978

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