Seiko Cal. 4447 - 435

The 4447-435 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-0f9cd78eaa7b]

Also known as: Monster, Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1980

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