Seiko Cal. 3866 - 659

The Seiko 3866-659 represents an important milestone in Seiko's 1975 lineup. Powered by the 3866 caliber with 35j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-d961c964f17d]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1975

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