Durability: Power saving design, with low energy consumption, low heat generations and long service time.BT Mode: Connect to the signal SZM-183 can use BT, support a variety of devices input: mobilephones / tablets / BT-enabled TV.Audio Mode: Support for audio input, you can plays music through the audio cable and mobilephones, computers, TVs, etc. connected.Music Mode: Inserting a memory card or U disk will automatically identify the audio files, support APE/WAV/FLAC/MP3 and other formats lossless decoding.Radio Mode: Support search radio station, with frequency modulation radio function. (weak signal)Mode Switching: Four modes can be switched by long press the pause playing button on the amplifier panel. 3 seconds / remote MODE button to switch mode.Mode Memory Function: This amplifier board also has a mode memory function, the power on machine will remember the last shutdown mode.Volumes Adjustment: High and low bass interface design, can adjust the sound individually.High Power Output: 35W-80W high power output, which can be connected to 6inch, 8inch, 10inch large speakers and 35W~80W audio.Remotely Control: Equipped with an infrared remote controller for easy operation.Wide Applications: 12/24/220 V universal design, suitable for mobilephones, TVs, DVDs, autos, speaker modifications, etc.Specifications:Name: Power Amplifier BoardMaterial: printed circuit boardBattery: 1 * CR2025 button battery (included, remote controller)Item size: 120 * 65 * 65mm / 4.72 * 2.56 * 2.56inPackage size: 152 * 87 * 75mm / 5.98 * 3.43 * 2.95inPackage weight: 267g / 9.42ouncePacking List:1 * Power Amplifier Board1 * Remote Controller1 * 3.5mm Audio Cable2 * Hornline1 * 12 V Power Cable1 * 220 V Power Cable