Features Support Multiple formats: Thre TPA3116 digital amplifier board supports for FLAC, WAV, MP3, WMA format decoding. Audio source supports for U disk / TF card decoding play and Bluetooth receiving playback. Multi-fuction: With the function of FM radio function and voice prompt. Additional features: with FM Radio, remote control to receiver (infrared mode). Easy to Use: The bluetooth receiver U disk TF card decoder has heat sink, it is safe to use, durable, lightweight and portable. Comes with remote control, more convenient to use and easy to operate. Excellent Performance: TPA3116 dual channel 2x50W, high efficiency and low-heat, applicable speaker impedance: 4,6,8 ohm. Wireless Audio: This Bluetooth audio receiver board is able to give your amplifier/home stereo Bluetooth capability, just a very simple operation can be converted into wireless audio. Specification: Item Type: Amplifier Board Bluetooth Version: 3.0 Audio Source: 1. U disk TF card decoding playback (support for FLAC, WAV, MP3, WMA format decoding) 2. Bluetooth receiving playback Supply Voltage: 8-26V DC (DC Power Supply) Amplifier Chip: TPA3116 Stereo Power 2x50W with heat sink (24V 3A or above is recommended) Additional Functions: FM radio function, there is a prompt tone: beep prompt, U disk TF card FM Chinese voice prompt Remote Control Battery: 3V 150mAh Button Battery (Not Included) Package List: 1 x TPA3116 Amplifier Board 1 x Remote Control (Battery Not Included) Package List 1 x TPA3116 Amplifier Board 1 x Remote Control (Battery Not Included)