Seiko Cal. 6311 - 897

The Seiko 6311-897 represents an important milestone in Seiko's 1985 lineup. Powered by the 6311 caliber with 18j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-357e8a76fe94]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1985

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