Seiko Cal. 3812 - 657

Released in 1980, the Cal. 3812 with design code 657 was part of Seiko's domestic market collection. Powered by the 3812 caliber with 29j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-5ab99ef78ae7]

Also known as: Sea Horse

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1980

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