Seiko Cal. 6666 - 347

The 6666-347 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-5b92c9725249]

Also known as: UFO, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1968

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