The Monster Rocking Roller 3 is a powerful Bluetooth speaker with 100 watts of powerful sound—and keeps the music going for up to 100 hours. TWS technology allows you to sync up to two Rockin' Roller 3 speakers wirelessly. The speaker also comes with NOAA weather radio. Plus, the telescoping handle, wheels, and newly integrated storage compartment makes it easy to take your music and accessories anywhere. Connect your mobile device wirelessly via Bluetooth and NFC connections, or listen to your favorite radio stations with the built-in FM radio.