Seiko Cal. 5610 - 321

Released in 1981, the Cal. 5610 with design code 321 was part of Seiko's domestic market collection. With its 22mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-6cba4cc98ac7]

Also known as: Helmet, Navigator

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Cream

Jewels

29j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1981

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