Host function description: 1. Audio format: Support MP3, WAV, APE and other audio formats. 2. Bluetooth function: support external Bluetooth devices such as mobile phones for audio playback. 3. External sound input: Support external input to the machine, amplified output. 4. Memory card function: external TF card, support 32GB TF card. 5. U disk function: Connect U disk (support 32GB) to read music through USB interface, and easily set up family background music space. 6. Volume adjustment: 27-level electronic volume adjustment function. Power-off memory function: memorize the state played before the last shutdown. Description Report Item touch screen bluetooth amplifier home audio mini wall amplifier support bluetooth USB TF Bluetooth Stereo Music Panel Amplifier Specifications: 2.4-inch Display Key Touch Audio Inputs one set; Output one set Radio Function: Built-in digital automatic FM radio, 30 stations FM Range: 87.5-108MHz Bluetooth: Support Installation: 86 standard wire box, front wall Host parameters: Power supply: AC220V(50HZ) allow110V-250V load: 4-8ohm Output Power: 2x20W : 98dB Frequency response: 20-20KHz Infrared remote control distance: 10m BT distance: 10m Product size: 86 x 86 x 10mm the host is suitable for AC110-250V power supply, please install and debug under the guidance of . speaker cable, power cable, audio input cable, please carefully check the terminal. confirm all the cables are correct before starting. do not modify, remove the maintenance, upgrade this host. a long time do not use the host, please turn off the power switch. color: Black Material: plastic+metal Package Contents: 1 x Music controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.