Seiko Cal. 4440 - 728

Seiko 4440-728

The 4440-728 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4440 caliber with 19j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-e0d7b7f448bb]

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
8.9mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
Silver
Jewels
19j
Frequency
21,600 bph
Power Reserve
38 hours
Year
1994

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