Seiko Cal. 6387 - 677

Seiko 6387-677

The 6387-677 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6387 caliber with 18j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-97ef47c2ae5f]

Also known as: Monster, Emperor

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
40mm
Case Thickness
9.7mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
150m
Dial Color
Silver
Jewels
18j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1967

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