Seiko Cal. 6630 - 693

Released in 1983, the Cal. 6630 with design code 693 was part of Seiko's domestic market collection. Powered by the 6630 caliber with 32j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-74477fe1ecf7]

Also known as: Tuna, UFO

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1983

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