The speakerphone features Parrot's proprietary advanced digital signal processing technology with full duplexing for clear, echo-free conversations in both small and large rooms. Its three highly sensitive microphones provide complete 360-degree voice pickup and a powerful 5-watt speaker allows conversations in normal voice levels for all participants. Because it is wireless and powered by three rechargeable Lithium Ion batteries, this unit can be easily moved from office to conference room to accommodate phone meetings wherever they occur.