Seiko Cal. 4437 - 566

Seiko 4437-566

The Seiko 4437-566 represents an important milestone in Seiko's 1981 lineup. Powered by the 4437 caliber with 30j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-b16bc9c90fa9]

Also known as: Monster, Pogue

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
34mm
Case Thickness
8.8mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
200m
Dial Color
Cream
Jewels
30j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1981

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