The EXM Mobile Sub is the first-ever lithium ion battery powered subwoofer in Pro Audio history. Equipped with two 8-inch woofers, the EXM Mobile Sub delivers tremendous bass for the Musician & DJ on the go. This sub supports mobile & wireless gigs anywhere without comprising the low end. The big sound of the club and concert hall can now be brought to the driveway gig, backyard party, or wedding tent. Weighing in at only 30 lbs, the EXM Mobile Sub can be carried in one hand. The new sub is compatible with all products in the EXM Mobile series, and includes Bluetooth streaming technology.