Seiko Cal. 6330 - 990

The Seiko 6330-990 represents an important milestone in Seiko's 1970 lineup. Powered by the 6330 caliber with 29j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-4ddd2fb3f6c4]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1970

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