Seiko Cal. 6657 - 389

The Seiko 6657-389 represents an important milestone in Seiko's 1983 lineup. Powered by the 6657 caliber with 21j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-49783634d925]

Also known as: Navigator

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1983

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