Seiko Cal. 4477 - 634

The Seiko 4477-634 represents an important milestone in Seiko's 1978 lineup. With its 20mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-be08bab9e038]

Also known as: Silverwave, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1978

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