Seiko Cal. 7057 - 966

The 7057-966 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7057 caliber with 21j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-4b8225fb23ec]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1996

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