Shure BLX14/P31 Q25, UHF Wireless System with PGA31 Wireless Headset Microphone, Frequency range: Q25 742 - 766 MHz, Comfortable and robust headset microphone, Clear and neutral voice reproduction, Wireless system is very simple to setup and operate, Reliable radio transmission, QuickScan finds the best freely available frequencies at the push of a button, Up to 12 systems simultaneously, Microprocessor controlled antenna diversity, Transmission range of the wireless system: 50 - 15,000 Hz@+*Set includes:* BLX4E wireless receiver, BLX1 pocket transmitter and PGA31 headset microphone@+@+@+*Features of the BLX4E receiver:*@+@+, TRX and XLR outputs, Dual-colour audio status LED, Internal antennas, Strain relief for power cable@+*Features of the BLX1 pocket transmitter: *@+@+, Operating status and battery status LED indicator, Continuously adjustable gain, Quick and easy frequency adjustment, Up to 14 hours of battery life via 2x AA batteries, Lock function for on / off switch, Up to 100 metre range, Weight: 75 g (without batteries)@+*Features of the PGA31 headset microphone:*@+@+, For speech and singing applications, Electret condenser capsule for a detailed and clear sound, Cardioid directional characteristic (for isolated sound sources and reduced background noise), Frequency range: 60 - 20,000 Hz, Flexible design and high degree of comfort when wearing, Windscreen is made from a foam material @+*Optional accessories:*@+@+, URT2 rackmount kit: Article Nr #133263# (not included, must be ordered as a separate item)