Seiko Cal. 6677 - 990

Seiko 6677-990

The 6677-990 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6677 caliber with 29j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-bd413ae3fea3]

Also known as: Monster, Silverwave

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
45mm
Case Thickness
9.6mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Silver
Jewels
29j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1986

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