Seiko Cal. 3857 - 647

Seiko 3857-647

The 3857-647 is a sought-after Quartz piece from Seiko's golden era. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-1f86b3e70e70]

Also known as: Monster

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
46mm
Case Thickness
11.9mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
90m
Dial Color
Champagne
Jewels
17j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1977

Related Models

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