Seiko Cal. 6311 - 890

The 6311-890 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6311 caliber with 34j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-b84a2aba5327]

Also known as: Tuna, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1972

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