Seiko Cal. 6681 - 206

This Automatic model from 1970 features a 37mm Stainless Steel case. Powered by the 6681 caliber with 36j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-74865c7fb2d7]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Burgundy

Jewels

36j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1970

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