Seiko Cal. 6331 - 711

The 6331-711 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6331 caliber with 29j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-23a8b6d2b3e0]

Also known as: UFO, Flighty

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

White

Jewels

29j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1989

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