Seiko Cal. 3840 - 486

The Seiko 3840-486 represents an important milestone in Seiko's 1968 lineup. Powered by the 3840 caliber with 29j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-decce9efc4ab]

Also known as: Bellmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1968

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