Seiko Cal. 3857 - 921

Seiko 3857-921

The 3857-921 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-e3f659384d3f]

Also known as: Samurai

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
44mm
Case Thickness
10.9mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Green
Jewels
29j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1990

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