Seiko Cal. 6690 - 670

Seiko 6690-670

The Seiko 6690-670 represents an important milestone in Seiko's 1975 lineup. Powered by the 6690 caliber with 30j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-eaf89078b911]

Also known as: Monster, Bellmatic

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
14.7mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
180m
Dial Color
Silver
Jewels
30j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1975

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