Seiko Cal. 3863 - 910

This Solar model from 1975 features a 39mm Two-Tone case. Powered by the 3863 caliber with 20j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-8be09ebf3e8c]

Also known as: Monster

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1975

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