Seiko Cal. 6311 - 780

The Seiko 6311-780 represents an important milestone in Seiko's 1981 lineup. Powered by the 6311 caliber with 36j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-2f26cce1dbd3]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1981

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