It's kind of a shame, but I ordered two of these units based on the feedback I'd researched.When they arrived, I opened up one of the boxes and the plastic packaging that secures the device had caused the mouthpiece to split in two!I figured it was a fluke, but when I opened the second unit, the same problem occurred.I sent them back to amazon, and the they were gracious to credit the purchase.Generally, Plantronics has great quality...I guess they picked the wrong packaging and distribution contractor.