Seiko Cal. 3878 - 746

Seiko 3878-746

The 3878-746 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3878 caliber with 29j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-c14babf684ff]

Also known as: Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
8.2mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Blue Sunburst
Jewels
29j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1990

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seikata-wm-c14babf684ff