Features: * The professional DAC AK4490 chip is used to make music more realistic, the sound field more wider and the resolving power more stronger. * Supports DSF, DFF, ISO suffix DSD audio format up to DSD128. Supports DXD, FLAC, APE, WAV, ALAC, AIFF lossless audio format up to 32Bit/384KHz. * With Bi-directional BT4.0 technology, it can be connected to BT headset, BT speakers or car audio. Can also be connected to mobile phone and let you enjoy HD sound quality. * For Hiby Link function, you can control X3II by mobile phone to play songs, adjust volume, search songd and more, no need to take out the player. * Bi-directional USB Type-C interface can output the USB audio, and can connect the computer USB port as USB DAC function. Offers More Convenience: * 2.4 inches Display Screen can display the relevant information, such as, song name, playtime, play mode, battery capacity, total song, volume, etc. * The player supports multiple languages, such as English, Chinese, Japanese, Korean, French, German, Polish, Russian, Thai, Spanish, Indonesian. * CNC aluminum alloy shell, small size, strong and durable. * Support TF Card reading up to 256GB.