Seiko Cal. 6657 - 783

The Seiko 6657-783 represents an important milestone in Seiko's 1986 lineup. Powered by the 6657 caliber with 20j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-63111fba0ad0]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1986

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