The Calisto 620 Bluetooth Speakerphone by Plantronics is a portable speaker system designed for use with Microsoft products. With a sleek black cube shape made of plastic, this speakerphone offers universal compatibility and Bluetooth connectivity for easy audio streaming. It features USB audio inputs and is ideal for on-the-go meetings or virtual communication. Crafted by Plantronics, a trusted brand in audio technology, the Calisto 620 provides high-quality sound for an enhanced communication experience.