The Altec Lansing RockBox will amplify your sound and electrify the party. Thanks to 24 watt RMS, the RockBox will deliver a powerful booming sound that will be sure to impress. Featuring up to 12 hours of battery life and a built-in smartphone charger, you and the music will keep going! The RockBox features House Party pairing, so go ahead and pair up to 50 House Party enabled speakers together for the ultimate surround sound. Plus, this speaker is IP67 waterproof rated, so a spontaneous rain shower will never interrupt the good times. Soaking wet and need to order a pizza? With Voice Assistant, you can access Siri or Google via Bluetooth by a simple vocal command all while remaining hands-free!