Seiko Cal. 4447 - 987

This Hand-Winding model from 1979 features a 36mm Titanium case. Powered by the 4447 caliber with 35j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-d1aa6de4b18f]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1979

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