Seiko Cal. 4533 - 637

The 4533-637 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-d5240124b4d3]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1989

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