Seiko Cal. 4440 - 241

The Seiko 4440-241 represents an important milestone in Seiko's 1983 lineup. It features a Black dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-9945d8547c55]

Also known as: Sumo, Helmet

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1983

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