Seiko Cal. 5644 - 278

Released in 1976, the Cal. 5644 with design code 278 was part of Seiko's domestic market collection. Powered by the 5644 caliber with 31j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-8cfd901cd770]

Also known as: Pogue, Crown

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1976

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