Seiko Cal. 7161 - 663

This Spring Drive model from 1978 features a 37mm Gold-Plated case. Powered by the 7161 caliber with 21j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-a0cdeb691b3b]

Also known as: Bullhead, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1978

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