Seiko Cal. 3811 - 995

The Seiko 3811-995 represents an important milestone in Seiko's 1969 lineup. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-0eae1d153fc5]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1969

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