Seiko Cal. 3877 - 957

Seiko 3877-957

The 3877-957 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3877 caliber with 19j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-003257cd7f7e]

Also known as: Helmet, World Timer

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
38mm
Case Thickness
9.7mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
50m
Dial Color
Black
Jewels
19j
Frequency
28,800 bph
Power Reserve
52 hours
Year
1984

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