Premium 2.1 home/portable wireless music system with built-in subwoofer. Quick, easy Bluetooth streaming from smartphones, portable music players and computers. Apt technology allows for audiophile quality streaming. Advanced DSP equalization for accurate reproduction of all music types.. 130 watts of digital system power. Features dual 2" full range drivers for incredibly detailed sound and a 5.25" subwoofer combined with a unique, dual port system for truly deep bass. 3.5mm input plays music from nearly any non-Bluetooth music source. USB input charges all smartphones and most portable music devices (cable not included). Portable long-life DC operation with 8 "D" cell batteries (not included). Remote control conveniently controls volume/mute and streaming music sources while being charged. The Klipsch Music Center KMC 3 is a 2.1 wireless home music system small enough to be portable yet large enough for party-level sound even in the great outdoors. Easy music streaming from any Bluetooth equipped smartphone, music device or computer. Solid-built and aesthetically designed with elegant soft-feel paint, high-gloss metallic accents and touch-sensitive controls. Dual two-inch full range drivers, internally chambered to minimize distortion, provide a clean and highly balanced sound up to 24kHz. A unique tuned dual-flare port system combines with a built-in 5.25 inch subwoofer for deep bass down to 40Hz. 130 watts of bi-amped digital amplification with advanced DSP equalization provides lifelike, dynamic sound at any volume level. Apt audio coding technology allows for lossless, audiophile-quality streaming. It's THE prescription for powerful, full-bandwidth sound for all music types that others can't fill.AC/DC operation and a built-in handle make the KMC 3 portable. Instead of a need-to-recharge unit that stops when the stationary battery dies, eight "D" cell batteries (not included) go all day (up to 26 hours). Unlike tiny, underpowered competitive models the KMC 3's sound is designed to come through loud and clear even when competing with the typical noise at a pool party or large picnic. The KMC 3 keeps any smartphone, most tablets and other music sources charged with its USB input (cable not included) and plays virtually any non-Bluetooth music source with its 3.5 mm input (cable not included). It remembers the last connected Bluetooth device and automatically reconnects to it the next time if it's available. The included remote controls volume and muting, and most wirelessly connected music sources while they charge and play simultaneously.