Seiko Cal. 7131 - 507

The Seiko 7131-507 represents an important milestone in Seiko's 1966 lineup. Powered by the 7131 caliber with 21j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-7c7a0cf3ea72]

Also known as: Arnie

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1966

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