Seiko Cal. 6684 - 766

The Seiko 6684-766 represents an important milestone in Seiko's 1975 lineup. Powered by the 6684 caliber with 22j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-78be355d32df]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Champagne

Jewels

22j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1975

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