Seiko Cal. 6311 - 939

The Seiko 6311-939 represents an important milestone in Seiko's 1978 lineup. Powered by the 6311 caliber with 22j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-a58c8824883d]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1978

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