The ClearOne Max Wireless Conference Phone is a high-performance phone system that provides clear, full-duplex audio in small conference rooms with up to eight participants. It is easy to set up and the conference phone can be conveniently moved from room to room operating within a 150 foot range of the base unit while utilizing 64-Bit encryption for secure wireless calls. The ClearOne Max Wireless' First-Mic Priority feature activates the mic closest to the speaker - eliminating hollow "tunnel" sound and the dual-function power supply/charger allows for conferencing while charging the phone's battery so there is never any down time. With MAX Wireless you can experience high quality, secure wireless conference calls in your executive office or small conference room. Wireless Conference Phone Up To 150' Range Secure Conferencing w/ 64-Bit Encryption First-Mic Priority Eliminates "Tunnel" Sound 360-Degree Microphone Coverage Conference Call Recording Acoustic Echo Cancellation Noise Cancellation Full Duplex Operation Automatic Gain Control (AGC) Automatic Level Controls 10 Station Speed Dial Conference Phone Pager Up to 12 Hours Talk Time Dual-Function Power Supply/Charger For use with Analog Telephone Lines