Seiko Cal. 4436 - 559

Released in 1969, the Cal. 4436 with design code 559 was part of Seiko's domestic market collection. It features a Silver dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-b7f46a17f29a]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1969

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