The Shure SLXD2/B87A is a handheld wireless transmitter for live performance. It seamlessly integrates into your existing SLX-D wireless system and is excellent for vocalists who need extra noise rejection onstage. Shure’s cutting-edge digital wireless technology delivers 24-bit audio resolution with an almost imperceptible 3.2ms of latency. Add in the working range of 100 meters (328 feet), and you’ve got a recipe for serious wireless potential. If you’re ready to take the plunge and give your system a much-needed upgrade, you can’t go wrong with a Shure SLX-D wireless setup.