Seiko Cal. 6660 - 636

The Seiko 6660-636 represents an important milestone in Seiko's 1974 lineup. It features a Cream dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-df68faba54dc]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1974

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