Seiko Cal. 6170 - 180

This Hand-Winding model from 1976 features a 42mm Two-Tone case. Powered by the 6170 caliber with 18j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-c7fb3d7b766b]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1976

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