Hear and be heard clearly on conference calls with the Expand SP20 Wired Speakerphone with USB Type-A & 3.5mm Connections. With its integrated USB 2.0 and 3.5mm wired audio connections, the Expand SP20 has nearly universal plug-and-play compatibility with most computers, tablets, smartphones, and other devices. Its 360° omnidirectional microphone has integrated echo cancellation for clear communication, while the speaker is enhanced with EPOS Voice technology for a natural listening experience. The Expand SP20 is certified for use with Microsoft Skype for Business and optimized for Unified Communication platforms when connected to Windows and Mac computers via USB. Its internal battery is designed to deliver up to 20 hours of talk time and 30 hours of standby time when using the 3.5mm audio connector, and it can be fully recharged in about 2 hours and 30 minutes. You can also kick back and listen to music with the high-quality speaker between calls. When it's time to go, you can slip the portable speakerphone into its included pouch for easy travel.