Seiko Cal. 6660 - 503

The Seiko 6660-503 represents an important milestone in Seiko's 1979 lineup. Powered by the 6660 caliber with 17j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-89863e21827b]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1979

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