Seiko Cal. 6311 - 391

The 6311-391 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6311 caliber with 19j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-ba96936c3133]

Also known as: Samurai, Helmet

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1971

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