Seiko Cal. 7177 - 442

This Hand-Winding model from 1981 features a 42mm Two-Tone case. Powered by the 7177 caliber with 23j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-df2df318b4e4]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

23j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1981

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