Seiko Cal. 6657 - 618

The Seiko 6657-618 represents an important milestone in Seiko's 1994 lineup. Powered by the 6657 caliber with 21j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-85bcc98db8ae]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1994

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