Seiko Cal. 3877 - 863

Seiko 3877-863

The Seiko 3877-863 represents an important milestone in Seiko's 1970 lineup. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-df38f1fd8a27]

Also known as: Samurai, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
43mm
Case Thickness
12.2mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
140m
Dial Color
Blue Sunburst
Jewels
26j
Frequency
28,800 bph
Power Reserve
68 hours
Year
1970

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