Seiko Cal. 6657 - 512

The 6657-512 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-49b4fa809f92]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1982

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