Seiko Cal. 3811 - 209

The Seiko 3811-209 represents an important milestone in Seiko's 1968 lineup. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-01741f8df8bd]

Also known as: Sumo, Bellmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1968

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