Seiko Cal. 5660 - 397

This Hand-Winding model from 1978 features a 42mm Stainless Steel case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-08e850b0b4c7]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1978

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