Feature 1 Adopt aluminum alloy cover, it is small and light and take no space to storage, USB/memory card play, it support MP3 format, lossless format music APE/FLAC/WMA. 2 Radio and broadcast function, support FM87.5108mhz radio, AUX/RCA stereo input, CD/ computer /MP3/ mobile phone connection, match multiple audio source wire ports. 3 Stereo effect is amazing, builtin V4.2 bluetooth, it is more convenient to match tablet/mobile phone and projector through wireless connection (linear distance of 10m/32.8ft). 4 Digital display directly shows the working mode, playing time, broadcast frequency, etc, special single loop play control, free choice of single or all loop. 5 Equipped with infrared remote control to control product switch, mute, play track, play mode, direct music selection, volume and other functions,with DC cable.Condition: 100% Brand NewItem Type: AmplifierMaterial: Aluminum AlloyColor: As Picture ShownWeight: Approx. 330.0g/11.6ozRMS Power @ 4Ohm 20W2CHTHD @ 4Ohm <0.25Frequency Response: 20Hz ~ 20KHz1dBInput Sensitivity: LOW LEVEL INPUT 0.25 ~ 2V:Signal Noise Ratio:+ A> 85 dBStereo Separation: + A> 80 DbPower Requirement: DC + 12V (9 ~ 15V)Bluetooth: 4.2Battery of Remote Control: CR2025(Ship with Battery) Package List1 x Amplifier1 x Manual1 x DC Cable1 x Remote Control