Seiko Cal. 6657 - 770

The 6657-770 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6657 caliber with 18j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-cf246456994a]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1996

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