Seiko Cal. 6630 - 620

Seiko 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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