Seiko Cal. 5656 - 643

This Solar model from 1977 features a 37mm Stainless Steel case. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-c6c3a17e18d6]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1977

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