Seiko Cal. 6680 - 548

Seiko 6680-548

The Seiko 6680-548 represents an important milestone in Seiko's 1970 lineup. Powered by the 6680 caliber with 21j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-5abc147ab22b]

Also known as: Helmet

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
45mm
Case Thickness
15.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Cream
Jewels
21j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1970

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