Seiko Cal. 6131 - 603

The Seiko 6131-603 represents an important milestone in Seiko's 1968 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-ca96d270479d]

Also known as: Panda, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Green

Jewels

34j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1968

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