Seiko Cal. 6656 - 723

The Seiko 6656-723 represents an important milestone in Seiko's 1974 lineup. It features a Green dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-edcc03820d46]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

14.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

26j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1974

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