Seiko Cal. 6657 - 223

The 6657-223 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Cream dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-c9fdb17e7feb]

Also known as: Helmet, UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1977

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