Seiko Cal. 5657 - 853

Released in 1975, the Cal. 5657 with design code 853 was part of Seiko's domestic market collection. Powered by the 5657 caliber with 21j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-e4c0501aeb46]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1975

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