Seiko Cal. 4537 - 553

The Seiko 4537-553 represents an important milestone in Seiko's 1979 lineup. It features a Black dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-8bc407451338]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1979

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