Seiko Cal. 6641 - 737

This Solar model from 1966 features a 42mm PVD Black case. With its 18mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-381bc8306554]

Also known as: Rally

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1966

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