Be the hero of the party with the Bose S1 Pro system. This Bluetooth® speaker delivers big sound from a rugged, all-in-one system. Stream from a mobile device, plug in a microphone, or even your favorite musical instrument. It’s lightweight and has a convenient carry-handle so it’s easy to bring nearly anywhere. Plus, with the optional rechargeable lithium-ion battery (sold separately), you can use your S1 Pro anywhere too. The S1 Pro is just what you need for parties, outdoor get-togethers, and all those times you need your voice and music to be heard. So bring a pro, the S1 Pro.