Seiko Cal. 4436 - 291

Seiko 4436-291

The 4436-291 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-0731efcd64e3]

Also known as: Sumo, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
12.3mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
190m
Dial Color
White
Jewels
18j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1976

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