Seiko Cal. 0731 - 101

The Seiko 0731-101 represents an important milestone in Seiko's 1979 lineup. Powered by the 0731 caliber with 17j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-17397286ae5b]

Also known as: Turtle, Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1979

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