Seiko Cal. 3890 - 978

This Automatic model from 1975 features a 34mm Two-Tone case. Powered by the 3890 caliber with 25j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-0c0556e7087b]

Also known as: Shogun, Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1975

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