iPod Docking with intelligent Bracket Super Powerful 50 Watts Max Battery Powered with built-in rechargeable lead acid battery 3 to 12 hours autonomy Bass Reflex System for Loud and Clear Crystal voice 3 Channel Mixer with Tone Control on Master Talkover for Microphone priority Made with 15mm MDF wood with Epoxy painting 5" Customized dual cone Woofer Record output / Master out 35 mm Pole mount for installation Charging iPod when Charging the u