Seiko Cal. 4437 - 735

Seiko 4437-735

The 4437-735 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-791cce14f5d1]

Also known as: Monster, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
15.8mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
40m
Dial Color
Navy
Jewels
22j
Frequency
28,800 bph
Power Reserve
69 hours
Year
1986

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