Seiko Cal. 4436 - 581

The 4436-581 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-63f49c44f904]

Also known as: Samurai, UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1985

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