The Sennheiser XSW 1-825 Dual bundles great sound and ease of use into a sleek handheld wireless system. The two included transmitters employ 825 cardioid capsules with a warm, smooth sound and excellent feedback rejection. Convenient features like one-button scanning and synchronization are housed in a streamlined receiver with built-in antennas. Intuitive icon-based indicators make operation a piece of cake. Use up to 10 systems simultaneously. The Sennheiser XSW 1-825 Dual is a great handheld wireless system for singers, presenters, and instrumentalists.