When we buy new device such as Plantronics CS70 Series we often through away most of the documentation but the warranty.
Very often issues with Plantronics CS70 Series begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Headphones Plantronics CS70 Series is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for Headphones on our side using links below.