Seiko Cal. 6630 - 580

The 6630-580 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6630 caliber with 23j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-2e4657ddb3ee]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1972

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