Seiko Cal. 6663 - 723

The Seiko 6663-723 represents an important milestone in Seiko's 1987 lineup. It features a Green dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-55fa316317f5]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

45mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1987

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