We've come a long way since those clunky living room stereo consoles. This 280 mm x 60 mm x 70 mm Bluetooth speaker delivers 3D sound technology for unbelievable sound and a complete music system. The front LED display shows time along with the speaker mode and the unit includes an alarm clock, built in microphone for hands-free calling, USB and Micro SD card slots will support up to 32GB, digital FM scan radio, and a 1,200 mAh lithium battery that provides up to 8 hours of music play time. Specs are: Auxiliary input; output power: 2x3W; frequency response: 100HZ-20KHZ; loudspeaker size: 4 ohm 3W; maximum peak current: 760MA; capacity: 1200mAh; signal to noise ratio: greater than 90 dB; Bluetooth Version: 3.0; and charge Voltage: 5V. Package includes micro usb charging cable and an auxiliary cable.