Seiko Cal. 0721 - 983

Seiko 0721-983

The Seiko 0721-983 represents an important milestone in Seiko's 1971 lineup. Powered by the 0721 caliber with 18j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-f144f0a32034]

Also known as: Monster, Sportsmatic

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
46mm
Case Thickness
14.8mm
Lug Width
22mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
200m
Dial Color
Green
Jewels
18j
Frequency
21,600 bph
Power Reserve
70 hours
Year
1971

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