Seiko Cal. 0770 - 690

The Seiko 0770-690 represents an important milestone in Seiko's 1979 lineup. Powered by the 0770 caliber with 33j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-46d7c81c8748]

Also known as: Monster, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1979

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