The Sennheiser EW-D CI1 SET with CI 1 Instrument Cable combines pristine 24-bit digital audio with an impressive 134 dB dynamic range, equidistant tuning grid, and automated Bluetooth set up App for your phone to create a professional rackmount wireless instrument system that anyone can use. Though easy to set up and simple to operate, the system's pro-level feature set is well equipped to handle the needs of both first-time and experienced users alike, bringing reliable wireless sound with ultralow 1.9ms latency to guitar/bass players and instrumentalists performing in small to medium-sized venues including concert stages, houses of worship, theaters, and clubs. The EW-D's ultrawide dynamic range means that input-sensitivity adjustments on the transmitter are not required. Based on the company's higher-end Digital 6000/9000 wireless systems, the equidistant tuning grid removes the need for frequency coordination and enables you to operate up to 90 mic channels simultaneously. It comes with an Auray WSB-1S, a lightweight padded nylon carrying bag designed to hold and protect a single microphone wireless system and accessories. Plus a Watson Rapid Charger with 4 AA NiMH Rechargeable Batteries. Box Contains Sennheiser EW-D ME2 SET Digital Wireless Omni Lavalier Microphone System (R4-9: 552 to 607 MHz) 1x EW-D EM Digital Wireless Receiver (R1-6: 520 to 576 MHz)1x EW-D SK Digital Wireless Bodypack Transmitter (R1-6: 520 to 576 MHz)1x CI 1 Locking 3.5mm to 1/4" Instrument Cable2x Antenna Rods1x Rackmount Set4x Rubber Feet1x NT 12-5 CW+ Power Supply2x AA Batteries Auray Carrying Bag 1x Accessory Pouch1x Shoulder Strap1x Adhesive Base HolderWatson Rapid Charger 4x AA NiMH Rechargeable Batteries