This Shure SLXD14D-J52 Dual Combo System is perfect for a wide range of users. Whether you're a presenter giving a long day of talks or a performer on stage at night, it's a great choice. It comes with a SLXD4D dual-channel receiver and 2 SLXD1 bodypack transmitters along with antenna and rackmount accessories and 4 AA batteries. The system offers features like crystal-clear 24-bit digital audio, extended frequency range (microphone dependent), and 120 dB dynamic range. It's easy to pair transmitters and receivers via IR scan and sync. Runs up to 8 hours on 2 AA batteries or with an optional rechargeable battery. Has interchangeable microphone capsules and a rugged metal construction.