The Line 6 XDV Digital Lavalier wireless system deliver previously unachievable wireless performance. This 4th-generation Line 6 digital wireless features exclusive technologies and rugged construction which is setting the standard for digital wireless. XDV digital wireless systems sound great at ten feet or 100 feet. Unlike with analog wireless systems, XDV audio quality remains crystal-clear and unchanged throughout each system's range. The XDV30L lapel wireless system features a 100-foot range (line-of-sight).