2-IN-1 STEREO HDSET TREOS 650 700W/P/WX 750 755 Get more for your money and minimize the number of things you have to carry with this combination mobile headset and stereo headphones. The omni-directional Electret condenser microphone lets you speak clearly while the 96dB Dynamic Receiver helps you hear even in noisy rooms. Plus, the durable, break-resistant cord is designed to last. And with a handy Push-to-Answer Button right on the cord, you won't even have to touch the phone to answer a call.