Seiko Cal. 3877 - 120

Seiko 3877-120

The Seiko 3877-120 represents an important milestone in Seiko's 1983 lineup. Powered by the 3877 caliber with 29j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-85d6642484bb]

Also known as: Sportsmatic, Arnie

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
46mm
Case Thickness
12.4mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Navy
Jewels
29j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1983

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