The Expand SP 30+ is a portable speakerphone that can be used with laptops, tablets, deskphone/PCSoftphone, and mobile phones through Bluetooth (via Bluetooth dongle that can be stored inside the speaker's compartment) or a USB 3.0 connection for conferencing or multimedia and music listening. It provides up to 18 hours of untethered use and offers notable features like noise-canceling capabilities with DSP (Digital Signal Processing), access to voice assistant via a dedicated button, and duplex performance. Ideal for personal conferencing use but can support huddle spaces or small/medium rooms with its 25-meters range.