Seiko Cal. 7057 - 820

Released in 1978, the Cal. 7057 with design code 820 was part of Seiko's domestic market collection. Powered by the 7057 caliber with 19j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-3149cceafeb4]

Also known as: UFO, Flighty

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1978

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