· FULL WIRELESS EXPERIENCE – Factory-installed Li-ion battery, optional wireless transmitters, as well as compatibility with the Bose Music App. Stereo Bluetooth streaming is on tap, as is a livestream mode with USB-C. Finally.· ZERO HOTSPOTS - Bose solutions are known for their wide, even coverage, and the S1 Pro+ is no exception. Sound is dispersed not just through the front of the enclosure but the sides as well, for room-filling sound from a single unit.· TONEMATCH TECHNOLOGY - S1 Pro+ includes a streamlined version of Bose's ToneMatch technology. Use the microphone setting for rich, lush vocal reproduction at a touch, or the guitar setting for pre-programmed settings for your acoustic.· GREAT SOUNDING AND BUILT TO LAST MIC - sE Electronics V7 Handheld Supercardioid Dynamic Microphone with Specialized aluminum voice coil manifests a crisp, open sound, integrated shockmount, internal windscreen, and Heavy-duty metal construction· EFFORTLESS WIRELESS CONNECTION - This wireless instrument transmitter includes a standard 1/4-inch connector, which pairs effortlessly with your S1 Pro+'s integrated wireless RF receiver, and stores in the dedicated compartment.