Seiko Cal. 6630 - 850

Seiko 6630-850

The 6630-850 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6630 caliber with 18j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-d79f926b8adf]

Also known as: Bullhead, Golden Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
42mm
Case Thickness
8.9mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Green
Jewels
18j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1976

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