Seiko Cal. 6666 - 710

The 6666-710 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-7f628a617b28]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1974

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