Seiko Cal. 5644 - 847

The 5644-847 is a sought-after Solar piece from Seiko's golden era. With its 18mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-7de7ee100839]

Also known as: Sumo, Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1972

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