Seiko Cal. 4447 - 521

The Seiko 4447-521 represents an important milestone in Seiko's 1967 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-d4714092d1ac]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

28j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1967

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