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Sony DR-BT21G manuals
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When we buy new device such as Sony DR-BT21G we often through away most of the documentation but the warranty. Very often issues with Sony DR-BT21G 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 Sony DR-BT21G 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.