All in one audio player with MP3 playback and control via USB, TF (microSD), LINE IN, FM, BLUETOOTH, and remote control. Hands calling: supports calls. To answer an incoming call, longpress the pause button. Recording capability: supports recording to USB drive or TF card. Start recording by longpressing the MODE button; longpress MODE again to stop recording and play back the recording file. To exit recording mode, longpress the PAUSE button. Recording operates in TF mode or USB mode only. When recording, a storage device such as a USB drive or TF card must be connected. Also supports interrupt Electrical memory. Direct speaker connection: can be connected directly to speakers and includes a builtin power amplifier and decoding functions for easy integration. Storage and compatibility: requires a USB drive or TF card for recording; supports USB and TF as playback sources. Use scenarios: Home entertainment setup: play MP3s from USB/TF, stream via BLUETOOTH to wireless speakers, enjoy FM radio, and control playback with the remote. Small or office background music: connect a mobile device or computer to LINE IN for continuous music or announcements, and use the remote to manage playback. DIY PA or compact sound system: connect directly to powered speakers, leveraging the builtin amplifier and decoding for simple, compact audio amplification and playback.