Seiko Cal. 3866 - 687

The Seiko 3866-687 represents an important milestone in Seiko's 1966 lineup. Powered by the 3866 caliber with 36j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-7a8766e4cae5]

Also known as: Arnie

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

36j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1966

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