Seiko Cal. 4437 - 770

Seiko 4437-770

The 4437-770 is a sought-after Solar piece from Seiko's golden era. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-fd80ff190b31]

Also known as: Monster, Helmet

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
45mm
Case Thickness
13.5mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Burgundy
Jewels
20j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1965

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