Transform your sound experience with the Rocksteady Stadium Subwoofer, the world's first truly portable wireless subwoofer. Wireless subwoofer connects with Rocksteady Stadium Speakers to create an immersive and premium listening area. Enjoy deep clear bass with this powered subwoofer that provides warmth and full bass on demand, filling a large area. . 5.11" front facing bass driver and a 6.7" x 4.5" rear facing bass drum. Customize your sound: Link unlimited Rocksteady Stadium speakers and subwoofers with one touch, covering any size area, indoors and out. Long-lasting subwoofer battery has up to 30 Hours playback on full charge, and Bluetooth range up to 100 feet. Charging cables, wall charger and carrying strap included. Connect your favorite media with this 1-Tap Bluetooth pairing subwoofer. Responsive LED touch controls and physical power switch. Rocksteady Stadium Speakers are required for Subwoofer to operate and are sold separately