Seiko Cal. 6631 - 879

The 6631-879 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-455cf038dad7]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1965

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