Surround yourself in rich sound with the SmartStream Multi-Room Audio System by Altec Lansing. Pairing with an app, you can control this system from anywhere in the house. This audio system is available in three sizes; the SmartStream, the SmartStream X, and the SmartStream XL. The SmartStream Speakers all connect via Bluetooth and Wi-Fi for a seamless experience. This also allows for connection to services such as Google Cast and Spotify Connect (and with better audio). In addition to big sound, this trio of speakers also offers practical durability. Each is waterproof, shockproof, and even dustproof. Finally, the SmartStream Multi-Room Audio System remains sleek with its all black design. Finally, the speakers boast an incredible 16-hour battery life for your total convenience.