Seiko Cal. 6131 - 275

This Kinetic model from 1971 features a 39mm Two-Tone case. With its 21mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-442bb89a183d]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1971

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