Seiko Cal. 6657 - 661

The 6657-661 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6657 caliber with 24j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-2cbf4871a9ed]

Also known as: Goldfeather, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1990

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