Seiko Cal. 6631 - 780

The 6631-780 is a sought-after Solar piece from Seiko's golden era. With its 22mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-3347711fd4ae]

Also known as: Samurai, Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1980

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