Seiko Cal. 3880 - 723

This Spring Drive model from 1967 features a 45mm Two-Tone case. Powered by the 3880 caliber with 35j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-072c41bca7ec]

Also known as: Goldfeather, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1967

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