The Shure SLXD15/UL4B wireless system comes complete with a Uniplex UL4 clip-on microphone that's simply plugged into the included SLXD1 bodypack transmitter, which is so small and slim, you'll barely notice you're wearing it. The Shure SLXD5 Receiver The SLXD5 receiver included with this system has an extremely compact design and is powered by AA batteries or the compatible Shure SB 903 rechargeable battery (not included), completing a fully mobile and cable-free kit that's ideal for journalists and film makers. This receiver can easily be slipped inside the free pocket of any sound technician's bag and, if you're a one-person crew, it can even be secured to your camera using the included cold-shoe mount. Shure SLX Digital Audio As soon as you compare the audio quality of older analogue wireless systems with digital models, you're looking at a huge leap forward. Via this smart, Shure-developed digital system, the 24-bit audio resolution guarantees a massive dynamic range of no-less-than 118 decibels, removing any chance of noise. And the boosted audio quality is not the only advantage, since the Shure SLXD system also uses the available bandwidth as efficiently as possible, meaning that multiple systems can be operated at the same time without fear of any issues.