Seiko Cal. 6687 - 306

This Automatic model from 1970 features a 40mm Gold-Plated case. Powered by the 6687 caliber with 23j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-8f82d1b87e77]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

23j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1970

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