Seiko Cal. 4531 - 270

The Seiko 4531-270 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-6b5929e29524]

Also known as: Sumo, Panda

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1977

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