Seiko Cal. 6648 - 905

The Seiko 6648-905 represents an important milestone in Seiko's 1977 lineup. Powered by the 6648 caliber with 30j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-8b7e0cb850e3]

Also known as: Silverwave, Navigator

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1977

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