Seiko Cal. 7021 - 647

The Seiko 7021-647 represents an important milestone in Seiko's 1977 lineup. Powered by the 7021 caliber with 25j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-b2a7334b2634]

Also known as: Sumo, Rally

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Cream

Jewels

25j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1977

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