Seiko Cal. 3870 - 799

This Hand-Winding model from 1991 features a 35mm Gold-Plated case. Powered by the 3870 caliber with 35j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-ff11ac06015a]

Also known as: Monster, Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1991

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