Seiko Cal. 4424 - 257

The Seiko 4424-257 represents an important milestone in Seiko's 1986 lineup. Powered by the 4424 caliber with 23j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-63abe7c2d221]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1986

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