Seiko Cal. 4436 - 397

Seiko 4436-397

The 4436-397 is a sought-after Hand-Winding piece from Seiko's golden era. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-91ac643f1db2]

Also known as: Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
8.5mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
180m
Dial Color
Green
Jewels
27j
Frequency
28,800 bph
Power Reserve
54 hours
Year
1976

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