Sennheiser EW D1-ME2 Evolution Wireless D1 Digital Presenter System with ME2 Omnidirectional Clip-On Microphone<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Simple - ew D1 automatically configures itself to deliver great sound. Focus on your performance， not on your gear! </span></li><li><span class="a-list-item"> Powerful - ew D1 automatically scans and selects the best frequency for operation. If interference is detected， D1 seamlessly moves to a new channel. </span></li><li><span class="a-list-item"> Reliable - "Wireless link protection" eliminates signal dropouts by continuously adjusting its transmission power and channel selection. </span></li><li><span class="a-list-item"> Detailed - crystal clear digital sound， featuring the renowned aptX Live codec. ew D1 offers wide frequency response， great dynamics and low latency </span></li><li><span class="a-list-item"> Durable - Rugged， all metal construction， backed up by comprehensive 2 year warranty when purchased from an authorized Sennheiser dealer! </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31EoU%2BXD4RL.jpg" noproxy>