The Plantronics Calisto 620 P620-M USB Bluetooth Speakerphone is a portable speaker system designed for Microsoft compatibility. It features a sleek black cube shape and is made of durable plastic. This speakerphone offers THX surround sound formats and smart home compatibility with Alexa. With Bluetooth connectivity and USB audio input, it provides a versatile and high-quality audio solution for various devices. Its compact design and unit quantity make it a convenient and efficient choice for improving communication and audio experience in the workspace. ES-2-2-1-3