Seiko Cal. 5665 - 840

This Spring Drive model from 1982 features a 36mm Hardlex-Coated Steel case. It features a Cream dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-0d4d07ff3f02]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1982

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