Seiko Cal. 5660 - 666

The Seiko 5660-666 represents an important milestone in Seiko's 1978 lineup. It features a Green dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-5284c4e12a96]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1978

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