Features: <br> <br>Supports 4 Audio input mode: Bluetooth receiver, USB decoding play, TF card decoding play and FM radio. <br>Supports play format: MP3, WMA, WAV, FLAC. <br>External power supply interface for lithium battery powered use. <br>Preamp output can directly promote the headset, also can be connected to the use of rear stage power amplifier. <br>Portable and compact size, light weight, easy to use and carry with you. <br> <br>Specification: <br>Condition: <br>Material: Metal + Plastic <br>Type: (optional) <br> #1: Bluetooth Audio Receiver Board + Remote Control <br> #2: Bluetooth Audio Receiver Board <br>Power Supply: 5V DC <br>Audio Output: 3.5mm Audio Output <br>Product Size: <br> Bluetooth Audio Receiver Board: Approx. 4 * 5cm / 1.6 * 2.0inch <br> Remote Control: 8.6 * 4cm / 3.4 * 1.6inch <br>Product Weight: Approx. 15g~28g <br> <br>Package Included: <br> <br>1# Package Included: <br> 1 * Bluetooth Audio Receiver Board (with microphone) + 1 * Remote Control <br>2# Package Included: <br> 1 * Bluetooth Audio Receiver Board (without microphone) <br> <br>Note: <br>1. Remove the translucent white plastic sheet from the bottom of the remote control before using it, so as to power on in the right way. <br>2. If you need the FM radio function, please first DIY a long wire as antenna on the FM antenna area.<br>1、Supports 4 Audio input mode: bluetooth receiver, USB decoding play, TF card decoding play and FM radio <br>2、Supports play format: MP3, WMA, WAV, FLAC <br>3、External power supply interface for lithium battery powered use <br>4、Preamp output can directly promote the headset, also can be connected to the use of rear stage power amplifier <br>5、Portable and compact size, light weight, easy to use and carry with you