... Support for Bluetooth stereo, input Line IN2. Power Amplifier 2.03. Support TF Card 4. Equipped ... with four buttons: PREV / VOL-,POWER/PLAY/PAUSE,NEXT / VOL+,MODE5. With built- ... recharged by computer or any USB power6. Output Power:2x2W7. High quality speaker8. Great sound quality ... Frequency response: 80Hz to 20kHz Frequencies o Maximum power output: 3W built-in lithium battery o Materials ...