Seiko Cal. 4437 - 558

The 4437-558 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Burgundy dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-81477fb62eb9]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

23j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1967

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