Seiko Cal. 5660 - 166

The Seiko 5660-166 represents an important milestone in Seiko's 1993 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-cf97fad82c89]

Also known as: Bellmatic, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1993

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