SMPS-182 Features: -Stereo speaker.-Acts as a stand and device can be placed in portrait or landscape mode.-Comes with built In amplifier.-Contains built in amplifier.-Powered by 4 x "AA" batteries not included and is AC adaptable (AC adaptor not included). Includes: -Includes a corded stereo input plug for easy connection and two built in high fidelity speakers. Dimensions: -Overall dimensions: 3.7" H x 6.3" W x 6.3" D.-Product weight: 18 lbs.