Seiko Cal. 7020 - 635

Seiko 7020-635

The Seiko 7020-635 represents an important milestone in Seiko's 1981 lineup. Powered by the 7020 caliber with 34j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-dd6f499f24b8]

Also known as: Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
13.3mm
Lug Width
19mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
60m
Dial Color
White
Jewels
34j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1981

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