Palm Treo 800 Stereo Headset Palm 180-10319-00/ 3287WW Stereo hands free Sleek ear-bud headset design fits snugly into the outer ear! In-line microphone/ mic reduces background noise, & increases the volume & clarity of your voice Send & End button can also initiate Voice-dial on voice-dial equipped cell phone models. Excellent audio quality enabling the use of your Palm Treo 800w stereo cell phone's built-in stereo