Headset wireless system from GLX-D Advanced series that operates in the Z2 frequency band and includes the GLXD1 body-pack transmitter, GLXD4R rack-mountable receiver, SB902 spare/replacement lithium-ion battery and MX153 ear-set microphone plus necessary accessories such as rechargeable battery, power supply, USB cable and carrying case. The rack-mountable wireless receiver GLXD4R with removable antennas features the revolutionary LINKFREQ Automatic Frequency Management and allows for operation of up to 4 compatible systems in a typical setting, and up to 8 maximum under ideal conditions. Its integrated battery charge port can charge a spare battery while the system is in use. The receiver features a high resolution LCD screen for real-time transmitter battery status, remote adjustable transmitter gain control and two-colour charge indicator LED, as well as XLR and 6.3mm output connectors. The GLXD1 transmitter features an ergonomic design and reversible belt clip to fit comfortably and snugly in various positions. It offers up to 16 hours of continuous use with Shure lithium-ion rechargeable batteries and provides locking TQG connection for use with Shure lavalier, headset, earset, and instrument microphones and guitar cables. The MX153 ear-set head-worn microphone provides an outstanding clarity in an extremely comfortable over-the-ear design and is ideal for applications in which improved gain before feedback over lavalier microphones is desired. Its subminiature omnidirectional cartridge offers superior clarity and enhanced plosive protection with no proximity effect, while its ultra-lightweight, comfortable, flexible design is stable and easy to place over either ear. The CommShield technology further guards it against interference from cellular RF devices and digital body-pack transmitters. The microphone features a Kevlar reinforced soft flex cable and comes supplied with protective storage pouch, 3 windscreens, and collar clip. Frequency: 2,4 GHz