Seiko Cal. 3857 - 283

Seiko 3857-283

This Hand-Winding model from 1979 features a 37mm Stainless Steel case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-5b7865263bf7]

Also known as: Bellmatic, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
8.7mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
200m
Dial Color
Silver
Jewels
17j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1979

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seikata-wm-5b7865263bf7