Seiko Cal. 0731 - 507

Released in 1972, the Cal. 0731 with design code 507 was part of Seiko's domestic market collection. Powered by the 0731 caliber with 26j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-8ab25f40b68c]

Also known as: Rally, Arnie

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1972

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