Seiko Cal. 4436 - 321

The Seiko 4436-321 represents an important milestone in Seiko's 1987 lineup. It features a Navy dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-5aa25dd2f1ed]

Also known as: Sumo, Pogue

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1987

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