Seiko Cal. 6657 - 889

The 6657-889 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6657 caliber with 35j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-bd9fa063ca1c]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1981

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