Seiko Cal. 6630 - 710

The 6630-710 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6630 caliber with 31j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-15875b7e9878]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1967

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