Seiko Cal. 6657 - 972

Released in 1992, the Cal. 6657 with design code 972 was part of Seiko's domestic market collection. With its 19mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-9d01a8ee89ed]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1992

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