Seiko Cal. 3891 - 915

The Seiko 3891-915 represents an important milestone in Seiko's 1970 lineup. Powered by the 3891 caliber with 19j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-ebe11f1ea906]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1970

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