Seiko Cal. 6660 - 853

Released in 1971, the Cal. 6660 with design code 853 was part of Seiko's domestic market collection. With its 21mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-b4fa568ca307]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Silver

Jewels

19j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1971

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