Seiko Cal. 3891 - 735

The 3891-735 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3891 caliber with 32j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-c9424ce82ceb]

Also known as: Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1969

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