Seiko Cal. 3891 - 646

This Solar model from 1985 features a 40mm Titanium case. Powered by the 3891 caliber with 33j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-ac7751911040]

Also known as: Helmet, Crown

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1985

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