Seiko Cal. 7177 - 389

This Hand-Winding model from 1971 features a 45mm Titanium case. Powered by the 7177 caliber with 28j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-7f5787a84d95]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1971

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