Seiko Cal. 5666 - 403

The Seiko 5666-403 represents an important milestone in Seiko's 1971 lineup. Powered by the 5666 caliber with 35j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-a57a30dd9532]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1971

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