Seiko Cal. 5644 - 704

This Solar model from 1980 features a 40mm Stainless Steel case. Powered by the 5644 caliber with 25j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-0c9702e12975]

Also known as: Bullhead, Silverwave

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1980

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