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Fronted are pictures hanging on the walls, which refer to woofers on the left, middle and right. Pictures backed with Flat Speakers are processed with professional design and exquisite craftsmanship. Flat Speakers are not&nbsp; serve as decoration for TV background. The rear pictures are surroundings on the left and right, which are the front pictures. The style of these pictures is unique and personalized. The fashionable subwoofer is placed near TV set while DVD Player and under or near TV set. The whole set of our Flat Speaker is compact and decent. Harm fashionable art and modern audible-visual of super and thin switch, digital amplifier, in order to have a good sound quality of this flat speaker. The power use the breadth electric voltage designs, which can used to the PC Power; . It can by the infrared ray, which takes the wall receives principle and designs to the side of speaker, so that having a nice and integrity appearance of this flat speaker. It can used for many situation: 1, Modern Family, Hotel, Wine Shop, Teahouse, Beauty the power, also can use with the amplifier together if the power has cut off. You can change the picture of this flat speaker by yourself. Installation Method: 1, Mobile type: Put on or USB at first, and then need to connect the power, you can enjoy the nice music at that time. 2, Fixed type: Hoisting or when the use of audio advertising, in order to prevent being taken away, with Sound rear cover glass glue paste on the wall. Please take the sound card upward, avoiding the SD card stolen by others. 3, Hanging type: Through the hook hang on the wall, which is stay at the , and then you can enjoy the music broadcast by the DVD player. And when used of MP3 player,and then connect the power; you can also enjoy the music as well. We can also make special size for you. nnex: Remote Control, Product Introduction, Expansion Screws; Supporting MP3 and WMA Windows Media Audiodocument format; The velocity of MP3: 32kbps 320kbps The velocity of WMA: 32kbps 384kbps 1. Working band: ISM 2.4GHz band free. 2. Preset number of channels 20 may be single-entry or single-Yi Fa overcharging. 3. Audio Delay <1.5mS. 4. GFSK digital modulation / demodulation. 5. SNR 80dB, dynamic range of 81dB, receive sensitivity-85dBm 6. Built-in PCB antenna can reduce the cost and development time. 7. Low-power consumption suitable for mobile product applications. 8. Channel quality is not good, bit error rate automatically mute. 9. 10dBm RF output power, reduce interference with other devices in the same frequency band. 10. Channel Separation @ 1KHz: 90dB 11. Transmission distance is 50 meters above the open (static).