Shure QLXD14/83-H50 Wireless System with WL183 Omnidirectional Lavalier Microphone, H50 Includes WL183, QLXD1, QLXD4, power supply, 2 AA batteries, two 1/2 wave antennas, 2 BNC cables, zipper bag, 2 BNC bulkhead adapters, rackmount kit, and user guide Featuring the WL183 lavalier microphone and QLXD1 wireless body pack transmitter, QLXD14/83 combines professional features with simplified setup and operation Half-rack QLXD4 Digital Wireless Receiver quickly finds open frequencies and deploys them to transmitters via the one-touch sync function Offers up to 9 hours of continuous use with 2 AA alkaline batteries (included) or up to 10 hours of continuous use with a Shure SB900 lithium-ion rechargeable battery (not included) Ethernet networking enables networked channel scanning and Wireless Workbench software integration for remote control of receiver settings from PC/Mac; remote monitoring and control from iOS devices also is available via the Shure Plus Channels Mobile App