Seiko Cal. 3861 - 863

The Seiko 3861-863 represents an important milestone in Seiko's 1973 lineup. Powered by the 3861 caliber with 32j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-e092d591fcf0]

Also known as: Bellmatic, Arnie

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1973

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