Seiko Cal. 7131 - 540

The Seiko 7131-540 represents an important milestone in Seiko's 1973 lineup. Powered by the 7131 caliber with 36j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-85a87dd140f0]

Also known as: Panda

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1973

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