Take it from a musician ... once you have experienced the clarity and control of an in-ear personal monitor system, you will never go back to bulky feedback prone floor wedges again! If you know your sound gear, you know that Shure is one of the best brand names in the business.

Here are the specs for the Shure P4R Body Pack Receiver for the PSM 400 System, with complete manufacturers warranty :

This is a single receiver, new from the factory and in the box, but does not include the ear buds. The E3 Single Driver Ear Buds are available, but not included in this price.

P4R Wireless Bodypack Receiver
Key Features
* High-impact plastic chassis
* Frequency locator

Operating Controls
* Operating mode (Stereo, Mono, Mix Mode)
* Volume knob
* Balance
* Defeatable limiter
* High-frequency boost
* Frequency select
* Backlit LCD Indicators
* RF reception
* Battery life
* Operating mode
* Frequency

Technical specs and user manual can be viewed at: http://www.shure.com/psm/models/p4R.asp