Seiko Cal. 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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