The D22 is a portable bluetooth speaker with 4.0 bt technology which allows to stream music wirelessly. It comes with a rechargeable battery and is USB powered. This speakers supports TF card and FM radio.
Item model number
-Output power: 7 Watt -Output power: 3.5 x 2 Watt RMS -Harmonic distortion: < 1% (1W 1 kHz) -Frequency response: 90Hz-20kHz -Signal/Noise ratio: > 80dB -Separation: > 60dB -Input: Bluetooth 4.0, TF card -Dimension: 190 x 49 mm