Seiko Cal. 7021 - 231

Seiko 7021-231

The Seiko 7021-231 represents an important milestone in Seiko's 1967 lineup. Powered by the 7021 caliber with 24j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-84846bf67819]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
44mm
Case Thickness
9.7mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
White
Jewels
24j
Frequency
28,800 bph
Power Reserve
51 hours
Year
1967

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