Seiko Cal. 7131 - 636

The Seiko 7131-636 represents an important milestone in Seiko's 1972 lineup. It features a Silver dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-a1da043ad037]

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1972

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