Seiko Cal. 7166 - 557

The Seiko 7166-557 represents an important milestone in Seiko's 1978 lineup. With its 20mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-8f2ef80d144c]

Also known as: Turtle, UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1978

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