Seiko Cal. 0727 - 644

Released in 1972, the Cal. 0727 with design code 644 was part of Seiko's domestic market collection. With its 22mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-425bafa8ed64]

Also known as: Silverwave, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1972

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