Seiko Cal. 6150 - 831

The 6150-831 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-556a86c3989d]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1966

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