Seiko Cal. 3880 - 947

This Spring Drive model from 1970 features a 46mm Titanium case. Powered by the 3880 caliber with 26j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-90e80c79eb97]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1970

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