Seiko Cal. 6311 - 987

The Seiko 6311-987 represents an important milestone in Seiko's 1994 lineup. Powered by the 6311 caliber with 22j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-6bba28411bd9]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1994

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