Seiko Cal. 3856 - 399

Seiko 3856-399

The 3856-399 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3856 caliber with 30j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-740e3c18c4d0]

Also known as: Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
15.7mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
150m
Dial Color
Blue Sunburst
Jewels
30j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1988

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seikata-wm-740e3c18c4d0