Seiko Cal. 3878 - 257

Seiko 3878-257

The 3878-257 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-43161e148977]

Also known as: Bellmatic, Arnie

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
8.9mm
Lug Width
19mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
40m
Dial Color
Burgundy
Jewels
29j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1978

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seikata-wm-43161e148977