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Title: Didn't work. And, broke my headset.
Review: Not only did this charger not work, it didn't quite fit my Plantronics 510 headset, and broke off the contact when I connected them. Now, I have neither a working headset nor a working charger. I have contacted the seller, and they are "looking into it", though no action so far. Although the description says, "Plantronics", this product is *not* an OEM product. It is a cheap aftermarket immitation. Ok, I learned my lesson.
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