Seiko Cal. 6630 - 768

The 6630-768 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6630 caliber with 21j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-9198c6f5d010]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

44mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1988

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