Seiko Cal. 6657 - 108

The 6657-108 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6657 caliber with 30j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-8a438c4f5b0b]

Also known as: Shogun, UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1983

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