Seiko Cal. 5661 - 421

The Seiko 5661-421 represents an important milestone in Seiko's 1983 lineup. It features a Silver dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-64b3d245956b]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1983

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