Seiko Cal. 6648 - 987

Seiko 6648-987

The Seiko 6648-987 represents an important milestone in Seiko's 1979 lineup. Powered by the 6648 caliber with 26j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-0f715d9bfd8e]

Also known as: Helmet, Navigator

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
11.1mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
Champagne
Jewels
26j
Frequency
36,000 bph
Power Reserve
65 hours
Year
1979

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