Seiko Cal. 6181 - 881

This Automatic model from 1975 features a 46mm Two-Tone case. Powered by the 6181 caliber with 29j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-d746a24d5ce9]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1975

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