Seiko Cal. 4440 - 635

The 4440-635 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-c735dbb34ea2]

Also known as: Pogue, Crown

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1984

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