Seiko Cal. 4440 - 507

The Seiko 4440-507 represents an important milestone in Seiko's 1989 lineup. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-f91e76c7020a]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1989

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