Seiko Cal. 3865 - 688

The Seiko 3865-688 represents an important milestone in Seiko's 1979 lineup. Powered by the 3865 caliber with 21j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-0343c0ce8bcd]

Also known as: Bellmatic, Flighty

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1979

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