Seiko Cal. 3857 - 666

Seiko 3857-666

The 3857-666 is a sought-after Solar piece from Seiko's golden era. Powered by the 3857 caliber with 34j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-8daabcf2d5d5]

Also known as: Rally, Goldfeather

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
42mm
Case Thickness
10.9mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
110m
Dial Color
Burgundy
Jewels
34j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1982

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