Seiko Cal. 6648 - 861

Seiko 6648-861

The Seiko 6648-861 represents an important milestone in Seiko's 1971 lineup. Powered by the 6648 caliber with 22j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-f6f53ca0b836]

Also known as: Tuna, Navigator

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
45mm
Case Thickness
14.8mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Champagne
Jewels
22j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1971

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