Audio Format: Supports MP3, WAV, APE, and more. Bluetooth Function: Enables pairing with external Bluetooth devices like mobile phones for audio playback. External Audio Input: Supports external input to the device with amplified output. Memory Card Function: Accepts external TF cards, supporting up to 32GB. USB Function: Connect a USB drive (supports up to 32GB) to play music and create a family background music atmosphere. Volume Adjustment: Features a 15-level electronic volume adjustment. Power-Off Memory Function: Remembers the playback state before the last shutdown. Hardware Parameters: Power: AC110V-250V (50HZ) Impedance: 4-8Ω Output Power: 2x15W Audio S/N Ratio: 98dB Frequency Response: 20-20KHz Infrared Remote Control Distance: 10M Bluetooth Distance: 10M Product Size: 86 x 86 x 10mm Installation: 86 Standard cable box Color: White Material: Plastic Package Contents: 1 x Bluetooth Music Panel 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.