Seiko Cal. 4418 - 377

The Seiko 4418-377 represents an important milestone in Seiko's 1975 lineup. With its 21mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-97da9924eedb]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1975

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