Seiko Cal. 4456 - 640

Seiko 4456-640

The 4456-640 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-9b0b6fa1aa9d]

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
13.5mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
200m
Dial Color
White
Jewels
19j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1975

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