Seiko Cal. 4487 - 694

The Seiko 4487-694 represents an important milestone in Seiko's 1983 lineup. Powered by the 4487 caliber with 36j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-4393a3dac89b]

Also known as: Tuna, UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1983

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