Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Plantronics Voyager 510 Bluetooth

I have been using bluetooth devices over the past 4 years and have owned several devices. This is the second 510 I have purchased due to the clairity and durability of the product. I also have a hard time keeping other devices on my ear and the wrap around design is what I have found works best for me. The only draw back is the bulk or thickness of the base but worth the trade off.