Seiko Cal. 0731 - 677

This Hand-Winding model from 1991 features a 44mm Stainless Steel case. Powered by the 0731 caliber with 21j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-046445a0dc13]

Also known as: Turtle, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

14.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1991

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