Seiko Cal. 3896 - 631

The Seiko 3896-631 represents an important milestone in Seiko's 1966 lineup. Powered by the 3896 caliber with 28j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-41451cd36139]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1966

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