Seiko Cal. 6311 - 820

The 6311-820 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6311 caliber with 17j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-815d228cc5f8]

Also known as: UFO, Sea Horse

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1988

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