AmpliVox Sound Systems S1204 Expand your S1204-70 Remote Speaker System effortlessly without stringing cables! The S1204’s built-in 50 watt amplifier and receiver plus dual Jensen 6″ x 8″ speakers make it easy. Build a multi-point wireless powered speaker network within the 300 ft. reception range.Power it with 10 alkaline D-cell batteries, S1460 Universal AC Adapter/Recharger or rechargeable NiCad Battery Pack, which requires S1460. (All sold separately). Features: -Adds additional coverage when you already have the S1204-70. -Place up to 300 feet away from sound system. -Power the system with 10 alkaline D-cell batteries, S1460 Universal AC Adapter/Recharger or rechargeable NiCad Battery Pack, which requires S1460. (All sold separately). -Exclusive, built-in AmpliVox 50 watt amplifier with built-in 900 MHz wireless receiver. -Overall Dimensions: 11″ H x 13.5″ W x 4.5″ D. -6 Year Warranty. Specifications