Seiko Cal. 3857 - 739

Released in 1968, the Cal. 3857 with design code 739 was part of Seiko's domestic market collection. It features a Silver dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-48680a151a0c]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1968

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