Seiko Cal. 5644 - 778

The 5644-778 is a sought-after Quartz piece from Seiko's golden era. With its 21mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-068adc1ac516]

Also known as: Rally

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1974

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