Seiko Cal. 4427 - 583

Seiko 4427-583

The Seiko 4427-583 represents an important milestone in Seiko's 1968 lineup. Powered by the 4427 caliber with 21j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-268e8fc9c17d]

Also known as: Tuna, Sportsmatic

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
46mm
Case Thickness
12.2mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Black
Jewels
21j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1968

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