Seiko Cal. 6630 - 620

The Seiko 6630-620 represents an important milestone in Seiko's 1985 lineup. Powered by the 6630 caliber with 23j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-fd59432ef225]

Also known as: Tuna, Bullhead

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

23j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1985

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