Seiko Cal. 6657 - 878

This Solar model from 1974 features a 37mm Gold-Plated case. Powered by the 6657 caliber with 34j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-924c3438e27c]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1974

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