Seiko Cal. 6311 - 320

Released in 1984, the Cal. 6311 with design code 320 was part of Seiko's domestic market collection. Powered by the 6311 caliber with 34j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-27446a7ed729]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1984

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