Seiko Cal. 6660 - 337

Released in 1976, the Cal. 6660 with design code 337 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-1ea68244adae]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1976

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