Seiko Cal. 3891 - 786

The Seiko 3891-786 represents an important milestone in Seiko's 1999 lineup. Powered by the 3891 caliber with 21j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-b6d24b120632]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1999

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