Seiko Cal. 4485 - 509

The 4485-509 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-1a9967af97bd]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1975

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