Parameters: Input voltage: 5V, 1-3A, TYPE-C USB memory stick decoding format: MP3 WMA, lossless WAV/FLAC/APE1411kbps/16bit Bluetooth decoding format: AAC Support mode: 5.1 Bluetooth decoding/U disk/sound card/AUX APP function: change bluetooth name, set password, set beep size, firmware upgrade, usb list, sleep song, etc. Attention. The shell needs to be assembled by yourself, the delivery does not include USB cable and audio cable. Depending on the batch, the electronic components on the decoder board may be different from the pictures, but the functions are the same and do not affect use. Wuzhi Audio APP download link for Android phones: http: //.qingdaowuzhi.cn/appdownload/Wuzhi_Audio.apk For iOS phones, please search "wuzhi audio" in the to download and install it. Material: PCB+electronic components+acrylic colour: black+transparent Package Contents: 1 x Decoder board 1 x Shell combination package 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. Product Features: 1. Made of high quality materials, quality is guaranteed 2. Real audiophile level, powerful core; more lossless formats, support 1411kbps 3. There is a magnet at the bottom of the product, which can be adsorbed on the metal amplifier and stereo chassis, which is more convenient to use. 4. With 3.5mm audio output port, can be directly connected to the headphones or amplifiers 5. Wide range of applications