Seiko Cal. 4487 - 683

The Seiko 4487-683 represents an important milestone in Seiko's 1985 lineup. It features a Black dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-212227ed2388]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1985

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