Seiko Cal. 6644 - 221

The Seiko 6644-221 represents an important milestone in Seiko's 1983 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-ce4a0cd96042]

Also known as: Silverwave, Crown

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1983

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