Seiko Cal. 7181 - 166

Released in 1975, the Cal. 7181 with design code 166 was part of Seiko's domestic market collection. Powered by the 7181 caliber with 33j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-6d9f29ed7da0]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1975

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