Seiko Cal. 4440 - 280

The Seiko 4440-280 represents an important milestone in Seiko's 1972 lineup. It features a White dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-b685d1a45bdb]

Also known as: Sumo, World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1972

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