Seiko Cal. 4428 - 615

The Seiko 4428-615 represents an important milestone in Seiko's 1999 lineup. Powered by the 4428 caliber with 28j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-06d37d455622]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

28j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1999

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