I was stunned. After 2 plantronics (a 320 and a 330) I was tired of earhooks that came loose and dropped calls. I thought it was my provider when my calls got dropped consistently in the same areas on my drive to/from work. But this headset is phenomenal! maybe one dropped call in a week... And the off/on operation is great! Open/close the boom to turn off/on! I love this headset... and I don't say that often