Sennheiser HDR 160 Headphone<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>2 AAA NiMH rechargeable batteries Instruction manual</li><li>This system uses the uncompressed digital wireless transmission technology from KLEER Corporation</li><li>KLEER delivers CD-quality sound， multi-receiver capability， ultra-low power consumption and higher immunity to interference.</li><li>Take the HDR 160 as an additional headphone for the RS 160. The HDR 160 is not a Bluetooth (BT) system and is an RF wireless system. Does not include a transmitter or charger</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41Bo23ZEPyL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/412RwKNf%2BRL.jpg" noproxy>