Monster Rockin' Rambler Portable Indoor/Outdoor Weather Proof Wireless Speaker - Gray The Monster Rockin' Rambler comes with a 3.5mm microphone/guitar input.. Play or sing along to your music. No Problem! *Guitar and Microphone not included 30 watts of powerful sound.is what you get with the Rockin' Rambler. These speakers were made to be taken anywhere in any weather. 30 hours on a full charge is what you get! Stop using speakers that need continuous charging! The USB input on the Rambler allows you to charge your mobile devices. Dont worry about your devices dying on you! Just charge via the 5 volt, 2 amp USB charger.