Seiko Cal. 6660 - 879

Released in 1966, the Cal. 6660 with design code 879 was part of Seiko's domestic market collection. It features a Silver dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-aea144dba5fe]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1966

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